Answers
CuCl(s), a solid byproduct of the reaction between Cu(s) and CuCl2(aq), is produced. This reaction is exothermic, meaning it emits heat energy to the surroundings. A critical step in the crystallisation process is cooling the solution after the reaction is complete.
What type of reaction is 2CuCl to Cu CuCl2?For example, copper(I) chloride disproportionates thus:2CuCl → Cu+CuCl2The reaction involves oxidation of one molecule CuI → CuII+eand reduction of the other CuI+e → CuThe reaction of halogens with hydroxide ions is another example of a disproportionation reaction, for example Cl2(g)+2OH−(aq) ⇌ Cl−(aq)+ClO−(aq)+H2O(l)
What purposes does CuCl2 serve?Copper (II) chloride is also known as cupric chloride. It is also an inorganic salt. This salt is also utilised as a catalyst during chemical synthesis. For the blue/green.
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Related Questions
(A) O ( B) La (C) Rb (D) Mg (E) N
1. What is the most electronegative element of the above?
2. Which element exhibits the greatest number of different oxidation states?
3. Which of the elements above has the smallest ionic radius for its most commonly found ion?
Answers
1. The most electronegative element is O (a)
2. The element that exhibits Greatest number of oxidation states is N (e)
3. The Smallest ionic radius for its most common ion is found for Mg (d)
1. Electronegativity is tendency of an atom to attract shared pair of electrons. Across a period, it increases from left to right while in a group, it decreases as we move down. The most electronegative elements are found in the top right of the periodic table because of the increase in effective nuclear charges. Hence, O is most electronegative element.
2. Oxidation state is the total number of electrons that an atom can either gain or loss to form a chemical bond. N exhibits a wide range of oxidation states from -3 to +5 because of half filled p orbital which is more stable.
3. Ionic radius is the radius of a monatomic ion in an ionic crystal structure. \(Mg^{2+}\) has higher number of protons that will attract the negatively charged valence electrons to a greater extent hence shortening the distance.
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I REALLY NEED HELP, PLEASE!!! DUE TONIGHT
Consider the reaction: CuCO3*Cu(OH)2(s)--> 2 CuO(s)+H2O(g)+CO2(g)
1.) What is the molar mass of CuCO*Cu(OH)2?
2. What total mass of H2O and CO2 will be produced when 1.000 mole of CuCO3*Cu(OH)2 is decomposed?
Answers
Answer :
Part 1: The molar mass of \(CuCO_3.Cu(OH)_2\) is 222 g/mol
Part 2: The mass of \(H_2O\) and \(CO_2\) is 18 g and 44 g respectively.
Explanation :
Part 1:
As we know that:
Atomic mass of copper, Cu = 64 g/mol
Atomic mass of carbon, C = 12 g/mol
Atomic mass of oxygen, O = 16 g/mol
Atomic mass of hydrogen, H = 1 g/mol
And we know that:
Molar mass of \(CuCO_3.Cu(OH)_2\) = (2 × Atomic mass of Cu) + Atomic mass of C + (5 × Atomic mass of O) + (2 × Atomic mass of H)
Molar mass of \(CuCO_3.Cu(OH)_2\) = (2 × 64) + 12 + (5 × 16) + (2 × 1)
Molar mass of \(CuCO_3.Cu(OH)_2\) = 128 + 12 + 80 + 2
Molar mass of \(CuCO_3.Cu(OH)_2\) = 222 g/mol
Part 2:
The balanced chemical reaction is:
\(CuCO_3.Cu(OH)_2(s)\rightarrow 2CuO(s)+H_2O(g)+CO_2(g)\)
From the balanced chemical reaction we conclude that:
1 mole of \(CuCO_3.Cu(OH)_2\) reacts to give 1 mole of \(H_2O\) and 1 mole of \(CO_2\)
Now we have to determine the mass of \(H_2O\) and \(CO_2\).
Mass of \(H_2O\) = Moles of
Molar mas of \(H_2O\) = 18 /mol
Mass of \(H_2O\) = 1 mol × 18 g/mol = 18 g
And,
Mass of \(CO_2\) = Moles of
Molar mas of \(CO_2\) = 44 /mol
Mass of \(CO_2\) = 1 mol × 44 g/mol = 44 g
Therefore, the mass of \(H_2O\) and \(CO_2\) is 18 g and 44 g respectively.
The molar mass of malachite has been 221.092 grams. The mass of water formed by the decomposition of 1 mole of malachite is 18 grams, and carbon dioxide has been 44 grams.
What is molar mass?The molar mass has been the mass of each constituent element in the compound. The molar mass of malachite has been given as:
\(\rm CuCO_3.Cu(OH)_2=2\;Cu+C+5\;O+2\;H\)
Substituting the mass of each element:
\(\rm CuCO_3.Cu(OH)_2=2\;(63.546)+12+5\;(16)+2\;(1)\\\\ CuCO_3.Cu(OH)_2=127.092+12+80+2\\\\ CuCO_3.Cu(OH)_2=221.092\;grams\)
The molar mass of malachite has been 221.092 grams.
The moles of water and carbon dioxide decomposed in the reaction has been given by the stoichiometry law as:
1 mole of malachite decomposed of 1 mole of water and 1 mole of carbon dioxide.
The mass of 1 mole of the compound has been equivalent to the molar mass.
Thus, the mass of water formed has been 18 grams, and the mass of carbon dioxide formed has been 44 grams.
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Step 1: She pours a colorless solution into a beaker that contains another colorless liquid. Yellow particles appear in the liquid.
Step 2: She lets the yellow particles settle in the beaker and then separates the colorless liquid by decantation.
What has most likely occurred in the beaker?
a chemical change in step 1 and a physical change in step 2
a physical change in step 1 and a chemical change in step 2
chemical changes in both step 1 and step 2
physical changes in both step 1 and step 2
Answers
It is most likely Option A: that a chemical change occurred in step 1 and a physical change occurred in step 2.
What is the chemical change?In step 1, the yellow particles appeared in the liquid, indicating a chemical change. This could be a result of a chemical reaction between the two colorless liquids, or the addition of a reagent that caused a reaction. This change is characterized by the formation of new substances, which are the yellow particles.
In step 2, the colorless liquid was separated from the yellow particles by decantation. Decantation is a physical process that separates immiscible liquids or solid particles from a liquid by allowing them to settle and then carefully pouring off the liquid.
Therefore, This change is characterized by the separation of components of a mixture, no new substances are formed.
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True or False:
Carbon forms an incredible variety of substances
because it has eight valence electrons making it a
very stable atom that readily bonds.
Answers
Answer:
true i think but dont take my word for it.✌
According to the electronic configuration, carbon has 4 valence electrons that makes it a very stable atom that readily bonds.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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Hydrogen Bonding with Water - Your Drug Lotensin Directions: Show the structure of your molecule below. Illustrate all ways that your molecule could form hydrogen bonds with water, either as a hydrogen donor or as a target (receiver) of hydrogen bonds from water. Do this by drawing bent water molecules as necessary and representing hydrogen bonds between water and the drug using dashed RED lines (---). Be sure that it is exactly clear which atoms on each molecule are involved in the hydrogen bonds. If your drug molecule is not capable of forming hydrogen bonds with water, fully explain why not below.
Answers
Answer:
See figure 1
Explanation:
For this question, we have to remember that a hydrogen bond is an interaction in which we have a partial attraction between a positive dipole and a negative dipole, and in this attraction, we have in the middle a hydrogen atom.
In this interaction, we can have a donor (positive dipole) or a receptor (negative dipole). The receptor is a heteroatom (an atom different to carbon or hydrogen) with high electronegativity. The donor is usually hydrogen atom bonded to the heteroatom.
I hope it helps!
How does this number compare to what you predicted at the beginning of this lab genetics?
Answers
Answer:
Scientists estimate that the human genome, for example, has about 20,000 to 25,000 protein-coding genes. ... In fact, compared to almost any other organism, humans' 25,000 protein-coding genes do not seem like many. The fruit fly Drosophila melanogaster, for example, has an estimated 13,000 protein-coding genes.
Explanation:
I hope this helps!Guysss how to explain nuclear chemistry? And define nuclear chemistry ?
Answers
Answer:
How do amoeba respire.
Define Diffusion.
Classify each of the following pure substances as an element or a compound.
1. a silicon (Si) chip
2. oxygen (O2)
3. hydrogen peroxide (H2O2)
4. rust (Fe2O3)
5. methane (CH4) in natural gas
Answers
Element (Si), Element (Oxygen) in molecular form (O2), Compound (H2O2), Compound (Fe2O3), Compound (CH4).
Silicon (Si) is a chemical element, which means that it is a pure substance consisting of only one type of atom. A silicon chip is made of pure silicon, so it is an element.Oxygen (O2) is also a chemical element, but in this case, it is in molecular form. Molecular oxygen (O2) is a colorless, odorless gas that makes up about 21% of Earth's atmosphere. Since it is a pure substance consisting of only one type of molecule, it is still considered an element.Hydrogen peroxide (H2O2) is a compound, which means that it is made up of two or more different elements chemically bonded together. In the case of hydrogen peroxide, it is composed of two hydrogen atoms and two oxygen atoms chemically bonded together. Hydrogen peroxide is commonly used as a disinfectant and bleaching agent.Rust is a compound made up of iron (Fe) and oxygen (O). Specifically, rust is the compound Fe2O3, which forms when iron reacts with oxygen in the presence of water. Rust is a common form of corrosion that can weaken and damage metal objects over time.Methane (CH4) is also a compound, made up of one carbon atom and four hydrogen atoms chemically bonded together. Methane is the primary component of natural gas, a fossil fuel that is used as a source of energy.Learn more about compound here https://brainly.com/question/13157010
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How many moles of aluminum ions al3+ are present in 0.42 mol of al2so43
Answers
There are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.
To determine the number of moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3, we need to consider the stoichiometry of the compound.
The formula of aluminum sulfate (Al2(SO4)3) indicates that for every 1 mole of the compound, there are 2 moles of aluminum ions (Al3+). This means that the mole ratio of Al3+ to Al2(SO4)3 is 2:1.
Given that we have 0.42 mol of Al2(SO4)3, we can calculate the moles of Al3+ as follows:
Moles of Al3+ = 0.42 mol Al2(SO4)3 x (2 mol Al3+ / 1 mol Al2(SO4)3)
Moles of Al3+ = 0.42 mol Al2(SO4)3 x 2
Moles of Al3+ = 0.84 mol Al3+
Therefore, there are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.
It's important to note that the stoichiometry of the compound determines the mole ratio between the different species involved in the chemical formula. In this case, the 2:1 ratio of Al3+ to Al2(SO4)3 allows us to determine the number of moles of Al3+ based on the given amount of Al2(SO4)3.
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6. How many moles are in 8.30 x 1023 molecules of CO₂?
a.
b.
C.
d.
1.37
2.8
55.5
100
Answers
What is the main element in diamonds and coal? What processes allow it to form crystalline structure,
tetrahedral units, hard molecular compounds, and compounds from decaying matter?
Answers
Answer:
Compounds From Decaying Matter.
Explanation:
A long time ago, when these were compounds in the ground. They were under lots of pressure, and then they turned into coal/diamonds.
Suppose you are titrating a sulfuric acid solution of unknown concentration with a sodium hydroxide solution according to the equation
H2SPO4+2NaOH⟶2H2O+Na2SO4 If you require 30.44 mL of 0.605 M NaOH solution to titrate 210.3 mL of H2SO4 solution, what is the concentration of the H2SO4 solution?
Answers
The sulfuric acid solution has a 0.175 M concentration.
The equation for the reaction between sulfuric acid and sodium hydroxide is as follows:
H2SO4 + 2NaOH → 2H2O + Na2SO4
To solve for the concentration of the sulfuric acid solution, we must first calculate the moles of sodium hydroxide needed to titrate the sulfuric acid solution. The molarity of the sodium hydroxide is given as 0.605 M, and the volume of sodium hydroxide used is given as 30.44 mL. Therefore, the number of moles of sodium hydroxide can be calculated as follows:
\(n(NaOH) = M(NaOH) * V(NaOH)\\n(NaOH) = 0.605 M * 0.03044 L\\n(NaOH) = 0.01844 mol\)
Now that we know the number of moles of sodium hydroxide required to titrate the sulfuric acid solution, we can calculate the number of moles of sulfuric acid present. Since the equation given is a 1:2 mole ratio, we can use the following equation:
\(n(H2SO4) = 2 * n(NaOH)\\n(H2SO4) = 2 * 0.01844 mol\\n(H2SO4) = 0.03688 mol\)
Now that we know the number of moles of sulfuric acid present, we can calculate the concentration of the sulfuric acid solution. The volume of the sulfuric acid solution is given as 210.3 mL. The molarity of the sulfuric acid solution can be calculated as follows:
\(M(H2SO4) =\frac{ n(H2SO4) }{ V(H2SO4)}\\\)
\(M(H2SO4) = \frac{0.03688 mol }{0.2103 L}\\M(H2SO4) = 0.175 M\)
Therefore, the concentration of the sulfuric acid solution is 0.175 M.
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What mass of li3po4 is needed to prepare 500. Ml of a solution having a lithium ion concentration of 0. 175 m?.
Answers
Answer:
Explanation:
To calculate the mass of Li3PO4 needed to prepare 500 mL of a solution having a lithium ion concentration of 0.175 M is to use the density of the solution. First, we need to calculate the density of the solution. The density of the solution is equal to the mass of Li3PO4 needed divided by its volume in Liters. We know that the mass of Li3PO4 needed is 8.94 g and the volume of the solution is 500 mL, which is equivalent to 0.5 L. Therefore, the density of the solution is 8.94 g/0.5 L = 17.88 g/L. We can then calculate the mass of Li3PO4 needed by multiplying the density of the solution by the volume of the solution. The mass of Li3PO4 needed is therefore 17.88 g/L x 0.5 L = 8.94 g
what is the change in mass of A in
60 minutes?
Mass of A (g)
12.4
10.4
9.1
7.7
6.2
Time
O
15
30
45
60
Answers
Answer:
To determine the change in mass of A over the given time period, we need to find the difference between the initial mass of A and the final mass of A.
From the given table, we can see that the initial mass of A at t = 0 (start time) is 12.4 g and the final mass of A at t = 60 minutes (end time) is 6.2 g.
Therefore, the change in mass of A over 60 minutes is:
Final mass of A - Initial mass of A
= 6.2 g - 12.4 g
= -6.2 g
The negative sign indicates that the mass of A decreased over time, which means that A underwent some kind of reaction or process that caused it to lose mass.
The change in mass of A over 60 minutes is -6.2 grams.
To determine the change in mass of A over 60 minutes, we need to compare the initial mass to the final mass.
From the given information, we can see that the mass of A decreases over time.
Let's calculate the change in mass.
Initial Mass of A: 12.4 g
Final Mass of A: 6.2 g
Change in Mass of A = Final Mass of A - Initial Mass of A
= 6.2 g - 12.4 g
= -6.2 g
The change in mass of A over 60 minutes is -6.2 grams.
Note that the negative sign indicates a decrease in mass.
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part 1 of 5
A 155 mL flask contains argon at 1.4 atm
and 86°C. What amount of Ar is present?
Answer in units of mol.
Answers
Considering the definition of ideal gas law, the amount of Ar present is 0.00702 moles.
Definition of ideal gas law.An ideal gas is a set of atoms or molecules that move freely without interactions. The pressure exerted by the gas is due to the collisions of the molecules with the walls of the container. Ideal gas behavior occurs at low pressures. At high pressures the molecules interact and intermolecular forces cause the gas to deviate from ideality.
The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:
P×V = n×R×T
Where:
P is the gas pressure.V is the volume that occupies.T is its temperature.R is the ideal gas constant. The universal constant of ideal gases R has the same value for all gaseous substances. n is the number of moles of the gas. Amount of ArIn this case, you know:
P= 1.4 atmV= 155 mL= 0.155 L (being 1000 mL= 1 L)T= 86 °C= 359 K (being 0 C= 273 K)R= 0.086 (atmL)÷(molK)n= ?Replacing in the definition of ideal gas law:
1.4 atm× 0.155 L = n×0.086 (atmL)÷(molK)× 359 K
Solving:
[1.4 atm× 0.155 L] ÷ [0.086 (atmL)÷(molK)× 359 K]= n
0.00702 moles= n
Finally, there are 0.00702 moles of Ar.
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how are chemical bonds formed?
Answers
Answer:
the answer is C.
Explanation:
Bonds form when atoms share or transfer valence electrons. Valence electrons are the electrons in the outer energy level of an atom that may be involved in chemical interactions. Valence electrons are the basis of all chemical bonds.
How many newtons of force are needed to accelerate a 1,875 kg object at a rate of 1.5 m/s2?
Answers
Answer: 1,950 N
Explanation:
2812.5N of force is needed to accelerate a 1,875 kg object at a rate of 1.5 m/s².
HOW TO CALCULATE FORCE:
The amount of force needed to accelerate a particular object can be calculated by multiplying the mass of the substance by its acceleration. That is;Force (N) = mass (kg) × acceleration (m/s²)According to this question, an object of mass 1,875 kg is accelerating at the rate of 1.5 m/s². The force is calculated thus:Force = 1875 × 1.5Force = 2812.5NTherefore, 2812.5N of force is needed to accelerate a 1,875 kg object at a rate of 1.5 m/s².Learn more at: https://brainly.com/question/19573976?referrer=searchResults
Calculate the ratio of the moles of produced to the moles of each of the reactants used. (Write two separate ratios.)
Answers
Ratio of moles of NH₃ produced to moles of N₂ used: 2 moles of NH₃ / 1 mole of N₂
Ratio of moles of NH₃ produced to moles of H₂ used: 2 moles of NH₃ / 3 moles of H₂
What is the mole ratio of the reaction?From the balanced chemical equation:
N₂ + 3 H₂ ⟶ 2 NH₃
We can determine the ratio of moles of products to the moles of each reactant.
Ratio of moles of NH₃ produced to moles of N₂ used:
From the balanced equation, we can see that 1 mole of N₂ reacts to produce 2 moles of NH₃. Therefore, the ratio is:
2 moles of NH₃ / 1 mole of N₂
Ratio of moles of NH₃ produced to moles of H₂ used:
From the balanced equation, we can see that 3 moles of H₂ react to produce 2 moles of NH₃. Therefore, the ratio is:
2 moles of NH₃ / 3 moles of H₂
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Given the equation of reaction;
N₂ + 3 H₂ ---> 2 NH₃
Calculate the ratio of the moles of produced to the moles of each of the reactants used. (Write two separate ratios.)
The final answers for the following problems should be written
6. Convert 2.225 x 1010 grams into kilograms.
Answers
Answer:
2.24725 kilograms
Explanation:
To convert grams to kilograms, you divide the number of grams you have by 1000. So, 800 g = 2.225 x 1010/1000 = 2.24725 kg
a metal worker used a cutting torch that operated by reacting acetylene gas with oxygen gas, as shown in the unbalanced equation below. balance the following equation for the reaction of acetylene and oxygen, using the smallest whole-number coefficients. (the values are 1,2,3,4,5)
Answers
The balanced equation for the reaction of acetylene (C₂H₂) and oxygen (O₂) is; 2 C₂H₂(g) + 5 O₂(g) → 4 CO₂(g) + 2 H₂O(g) + heat
The coefficients in the balanced equation represent the stoichiometric ratio of the reactants and products in the chemical reaction. In this case, 2 molecules of acetylene (C₂H₂) react with 5 molecules of oxygen (O₂) to produce 4 molecules of carbon dioxide (CO₂) and 2 molecules of water (H₂O), along with the release of heat.
The balanced equation shows that the number of atoms of each element is the same on both the sides of the equation, in accordance with the law of conservation of mass.
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Which of the following is the only genotype not able to taste PTC.
a. IT
b. Tt
c. tt
Answers
Genotype have the non-taster phenotype
What is the predominant form of ethylenediamine at pH 6.184 ?
H2NCH2CH2NH+3
H2NCH2CH2NH2
H+3NCH2CH2NH+3
Answers
The predominant form of ethylenediamine at pH 6.184 is H2NCH2CH2NH+3.
At pH 6.184, which is slightly acidic, the amino groups in ethylenediamine (H2NCH2CH2NH2) can partially protonate, resulting in the formation of ammonium ions (H+3NCH2CH2NH+3). The equilibrium between the neutral form and the protonated form is pH-dependent.
Therefore, at pH 6.184, the predominant form of ethylenediamine is H2NCH2CH2NH+3.
How does the chemical structure of a substance affect its interaction with other substances?
Answers
This is due to the fact that a substance's chemical qualities, such as its molecular form, polarity, and functional groups, govern how it behaves and interacts with other substances.
How does their chemical makeup impact their chemical characteristics?By illustrating the spatial arrangement of atoms and chemical bonds within the molecule, chemical structure establishes the molecular geometry of a compound. In doing so, chemists are given a crucial visual depiction of a chemical formula.
In what ways do drugs interact with one another?In a chemical reaction, reactants come into contact with one another, atoms in the reactants break their connections with one another, and then the atoms reorganise and form new bonds to create the products.
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2 You have 500 cm of a liquid
and 500 cm3 of a gas. You
place the liquid and the gas
into separate litre bottles. Do
the liquid and the gas occupy
the same volume in the two
bottles? Explain your answer.
Answers
Answer:
No
Explanation:
The gas will have more volume compared to the liquid.
Gases have no definite shape and no volume. They simply assume the shape of any container they are placed into. They will fill up the entirety of the bottle they are placed into.
Liquids have fixed volume although they do not have fixed shape. As they are held with weak intermolecular interactions, they are limited in space.
Therefore, they will maintain that initial volume at which they were introduced into the container.
Liquids generally have a fixed volume and gases do not.A student wants to do scientific research to find new ways to detect toxic
substances in water. What field of science would this research mostly
involve?
OA. Biology
O B. Astronomy
O
OD. Physics
C. Chemistry
SUBMIT
Answers
the field of science which would mostly research is chemistry.
13. Classify the following as pure substances or as mixtures:
air
gasoline
grain alcohol
gold
salt water
water
Simery
mercury
sugar
oxygen
Answers
Pure substances - gasoline, grain alcohol, gold, water, mercury, sugar, and oxygen.
Mixtures - air, salt water.
Pure substances vs Mixtures
Pure substances are made up of only one type of molecule. On the other hand, mixtures are substances that are a mix of two or more different molecules.
Mixtures can be heterogenous when the different molecules are not evenly distributed or homogenous when the molecules are uniformly distributed within the substance.
Gasoline, grain alcohol, gold, water, mercury, sugar, and oxygen all consist of a single type of molecule. They are thus, pure substances.
Air is a mixture of different gases such as oxygen, carbon dioxide, nitrogen, etc. Salt water is a mixture of water and salt.
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Jet streams generally flow toward the
a. north
b. south
c. east
d. west
please answer thank you
Answers
Answer:
The major jet streams on Earth are westerly winds that flow west to east.
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each SI unit to the quantity it measures.
Answers
The SI unit to the quantity it measures are:
mass - kilogram, gramtemperature - kelvintime - second, nanosecondelectric current - ampereWhat is SI unit used for?Mass: The mass of an object is a measure of its amount of matter. The SI unit of mass is the kilogram (kg) or gram (g).
Temperature: Temperature is a measure of the average kinetic energy of the particles in a substance. The SI unit of temperature is the kelvin (K).
Time: Time is a measure of the interval between two events. The SI unit of time is the second (s).
Electric current: Electric current is a measure of the flow of electric charge. The SI unit of electric current is the ampere (A).
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Complete question:
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each SI unit to the quantity it measures.
What is the atomic symbol for lead?
Answers
Answer:
Pb
Explanation:
Answer:
Pb is the answer You're looking for
When zinc reacts with copper sulfate solution, zinc sulfate solution and copper are formed.(i) An experiment was carried out to measure the temperature change when zinc powder reactswith copper sulfate solution.initial temperature of copper sulfate solution = 20 °Cfinal temperature of mixture after the reaction = 46 °CExplain what the temperature readings show about the type of heat change that occurs duringthis reaction.
Answers
The temperature increase from 20 °C to 46 °C indicates that the reaction between zinc and copper sulfate solution is exothermic, with heat being released into the surroundings.
In the given reaction between zinc and copper sulfate solution, the temperature change can provide insights into the type of heat change occurring during the reaction. Based on the provided information, the initial temperature of the copper sulfate solution was 20 °C, and the final temperature of the mixture after the reaction was 46 °C.
The temperature increase observed in this reaction indicates an exothermic heat change. An exothermic reaction releases heat energy into the surroundings, resulting in a temperature rise. In this case, the reaction between zinc and copper sulfate solution is exothermic because the final temperature is higher than the initial temperature.
During the reaction, zinc displaces copper from copper sulfate to form zinc sulfate and copper metal. This displacement reaction is known as a single displacement or redox reaction. Zinc is more reactive than copper and therefore replaces copper in the compound.
The formation of new chemical bonds during the reaction releases energy in the form of heat. This energy is transferred to the surroundings, leading to an increase in temperature. The heat released is greater than the heat absorbed, resulting in a net increase in temperature.
The exothermic nature of this reaction can be explained by the difference in bond energies between the reactants and products. The breaking of bonds in the reactants requires energy input, while the formation of new bonds in the products releases energy.
In this case, the energy released during the formation of zinc sulfate and copper metal is greater than the energy required to break the bonds in copper sulfate and zinc.
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