Write the reduction and oxidation half reactions MnO4-(aq)+Cl-(aq)—>Mn2+ +Cl2(g)
Answers
The half-reaction is
Reduction: \(2MnO_4^-(aq) + 16H^+(aq) + 10e^- \rightarrow 2Mn_2^+(aq) + 8H_2O(l).\)
Oxidation: \(2Cl^-(aq) \rightarrow Cl_2(g) + 2e^-.\)
To determine the reduction and oxidation half-reactions for the reaction:
\(MnO_4^-(aq) + Cl^-(aq) \rightarrow Mn_2^+(aq) + Cl_2(g)\)
Let's break down the reaction into the reduction and oxidation half-reactions:
Reduction Half-Reaction:
\(MnO_4^-(aq) + 8H^+(aq) + 5e^- \roghtarrow Mn_2^+(aq) + 4H_2O(l)\)
In the reduction half-reaction, \(MnO_4^-\)(aq) gains 5 electrons (5e-) and is reduced to \(Mn_2^+\)(aq). Hydrogen ions (\(H^+\)) from the acid solution are also involved in balancing the charges, resulting in the formation of water \((H_2O)\).
Oxidation Half-Reaction:
\(2Cl^-(aq) \rightarrow Cl_2(g) + 2e^-\)
In the oxidation half-reaction, 2 chloride ions (\(Cl^-\)) lose 2 electrons (2e-) and are oxidized to form chlorine gas (\(Cl_2\)).
Balancing the number of electrons in both half-reactions:
Multiply the reduction half-reaction by 2:
\(2MnO_4^-(aq) + 16H^+(aq) + 10e^- \rightarrow 2Mn_2^+(aq) + 8H_2O(l)\)
Now, the number of electrons lost in the oxidation half-reaction (2e-) matches the number gained in the reduction half-reaction (10e-).
Overall balanced equation:
\(2MnO_4^-(aq) + 16H^+(aq) + 10Cl^-(aq) \rightarrow 2Mn_2^+(aq) + 8H_2O(l) + 5Cl_2(g)\)
Therefore, the reduction half-reaction is \(2MnO_4^-(aq) + 16H^+(aq) + 10e^- \rightarrow 2Mn_2^+(aq) + 8H_2O(l)\), and the oxidation half-reaction is \(2Cl^-(aq) \rightarrow Cl_2(g) + 2e^-.\)
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Related Questions
What force pulled the solar system together out of a cloud of gas and dust
Answers
Approximately 4.5 billion years ago, gravity pulled a cloud of dust and gas together to form our solar system.
Help me please…………..d
Answers
is CO(NH2)2 and (NH2)2CO the same thing
Answers
Answer:
Explanation: the answer is YES
CO(NH2)2 and (NH2)2 CO is the urea
what is the best optimal wavelength at which to measure the abs of a set of give crystal violet solutions
Answers
The best optimal wavelength at which to measure the absorbance of a set of given crystal violet solutions is 590 nm.
Crystal violet is a type of dye that is commonly used in laboratories to stain cells. It absorbs light most strongly at a wavelength of 590 nm, which is in the visible light spectrum. This is the best wavelength to use when measuring the absorbance of crystal violet solutions because it will provide the most accurate and reliable results.
To measure the absorbance of the crystal violet solutions, you will need a spectrophotometer. This is a device that measures the amount of light absorbed by a sample at a specific wavelength. First, you will need to calibrate the spectrophotometer using a blank solution. Then, you can measure the absorbance of each crystal violet solution at 590 nm by placing the solution in the spectrophotometer and recording the absorbance value.
By measuring the absorbance of the crystal violet solutions at the optimal wavelength of 590 nm, you can ensure that you are getting the most accurate and reliable results.
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For the following pairs of ions, use the concept that a chemical compound must have a net charge of zero to predict the formula of the simplest compound that the ions are most likely to form. Write the formula of the metal first and follow by the non metal
Answers
\(\\ \sf\longmapsto FeP\)
\(\\ \sf\longmapsto Fe_2S_3\)
\(\\ \sf\longmapsto FeCl_2\)
\(\\ \sf\longmapsto MgCl_2\)
\(\\ \sf\longmapsto MgO\)
\(\\ \sf\longmapsto Mg_3N_2\)
\(\\ \sf\longmapsto Na_3P\)
\(\\ \sf\longmapsto Na_2S\)
\(\\ \sf\longmapsto CoO\)
\(\\ \sf\longmapsto Co_2S_3\)
\(\\ \sf\longmapsto AlCl_3\)
\(\\ \sf\longmapsto CsBr\)
\(\\ \sf\longmapsto Ti_2O_4\)
\(\\ \sf\longmapsto Ag_2S\)
I
Subscripts are used to identify substances.
II
Coefficients are used to identify substances.
Chemical formulas are used to identify substances.
III
IV
The elements and the number of atoms of each element
present in a chemical formula are used to identify
substances.
Which of the above statements is true?
II and III
I and III
I and II
III and IV
Answers
Answer: III and IV
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Which two neutral atoms would have the same number of valence electrons, according to the highest nsxnpy in their electron configurations?ChlorineSeleniumSodiumSulfurPhosphorusCalcium
Answers
In this question, we have to choose two neutral atoms that will present the same number of valence shell electrons, in order to do that, we can look for these elements in the periodic table, the elements that are in the same group will have the same number of electrons in the valence shell, this is the case of Sulfur and Selenium, both are in group 6 and present 6 electrons in the valence shell
iii) (5 pts) Assume that the expected bankruptcy costs have a present value of $500,000. How does this influence your decision about whether you will choose to repurchase stock or retire debt
Answers
**Repurchasing stock** would be more favorable than retiring debt if the expected bankruptcy costs have a present value of $500,000.
When deciding between repurchasing stock or retiring debt, you need to consider the impact of the expected bankruptcy costs on your company's financial health. **Bankruptcy costs** can arise from a variety of factors, including legal fees, loss of reputation, and decreased market value. In this case, the present value of these costs is $500,000. If you choose to retire debt, your company's risk of bankruptcy may decrease, potentially reducing the bankruptcy costs. However, if you choose to repurchase stock, you may be able to increase your company's market value, offsetting the potential bankruptcy costs.
In conclusion, the choice between repurchasing stock or retiring debt depends on the company's financial situation and its ability to manage the risk of bankruptcy. If the expected bankruptcy costs can be mitigated or offset by increasing market value through stock repurchase, this option would be more beneficial to the company.
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what regulates the flow of chilled water through the cooling coil
Answers
The flow of chilled water through the cooling coil is regulated by a control valve.
In HVAC systems, the flow of chilled water through the cooling coil is regulated by a device called a control valve. The control valve is responsible for adjusting the flow rate of chilled water based on the cooling demand of the system. It ensures that the right amount of chilled water is supplied to the cooling coil to maintain the desired temperature in the conditioned space.
The control valve is typically controlled by a building automation system or a thermostat. These devices monitor the temperature in the conditioned space and send signals to the control valve to open or close. When the temperature rises above the set point, the control valve opens to allow more chilled water to flow through the cooling coil, cooling the air. Conversely, when the temperature falls below the set point, the control valve closes to reduce the flow of chilled water.
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The flow of chilled water through the cooling coil is regulated by a control valve. This valve adjusts the flow rate based on the cooling needs of the system.
A thermostat or temperature sensor provides signals to the control valve, which opens or closes accordingly.
When the temperature exceeds the desired setpoint, the control valve opens, allowing more chilled water to pass through the cooling coil.
This increases cooling capacity and lowers the air or space temperature.
Conversely, the control valve closes when the temperature reaches or falls below the set point, reducing chilled water flow.
The control valve ensures precise temperature control and efficient cooling operation in the system.
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How many different elements are there in 4AgNO3
Answers
Answer:
bobo ang brainly
Explanation:
kasi hindi nya binibigay a ng tamang question
What is an addition reaction of alkenes ?
Answers
\(\huge\pink{\boxed{\tt{\colorbox{pink}{ANSWER}}}}\)
Chemical transformation of a carbon-carbon double bond is the addition reaction.
Explanation:
Consequently, if the bond energies of the product molecules are greater than the bond energies of the reactants, the reaction will be exothermic.
hope it helps
The molar mass of gallium (
G
a
GaG, a) is
69.72
g
/
m
o
l
69.72 g/mol69, point, 72, space, g, slash, m, o, l.
Calculate the number of atoms in a
27.2
m
g
27.2 mg27, point, 2, space, m, g sample of
G
a
GaG, a.
Answers
2.35 x 10²⁰ atoms are present in a 27.2 mg sample of Gallium.
What kinds of molecules have different masses?The total atomic mass of all the atoms that make up a molecule is calculated using a scale where the atomic masses of hydrogen, carbon, nitrogen, and oxygen are 1, 12, 14, and 16, respectively. For instance, the molecular mass of water, which consists of two hydrogen atoms and one oxygen atom, is 18 (2 + 16).
moles of Gallium = mass of sample / molar mass of Gallium
moles of Gallium = 27.2 mg / 69.72 g/mol
moles of Gallium = 0.0003906 mol
The number of atoms can be determined using Avogadro's number:
number of atoms = moles of Ga x Avogadro's number
number of atoms = 0.0003906 mol x 6.022 x 10²³ atoms/mol
number of atoms = 2.35 x 10²⁰ atoms
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C- row 2, colun
II. Write "T" if the statement is true, and “F” if it is false,
Change the underlined word(s) to make the statement
true.
1. In the periodic table as suggested by Mendeleev, elements were
arranged in the order of increasing atomic number.
2. Sodium (Z=11) is a member of a group called alkaline earth
metals.
3. Elements to the extreme right of the periodic table are metals.
4. Metalloids have properties of metals and non-metals.
Answers
Answer:
1). In the periodic table as suggested by Mendeleev, elements were
the periodic table as suggested by Mendeleev, elements werearranged in the order of increasing atomic number.
--> T
2). Sodium (Z=11) is a member of a group called alkaline earth
Sodium (Z=11) is a member of a group called alkaline earthmetals.
--> T
3). Elements to the extreme right of the periodic table are metals.
--> F
They are non-metals .
4). Metalloids have properties of metals and non-metals.
--> T
A.
Tissue
B.
Organ
C.
Cell
D.
Organism
Answers
Answer:
Tissue
Explanation:
We are not talking about cells, organs, or the organism as a whole
Hope this helps!
pls mark brainliest if correct:)
Non-ferrous metal is NOT hardenable by heat treatment; it must
gain strength through a process such as tempering. Is this
statement TRUE or FALSE?
Group of answer choices
True
False
Answers
The statement is FALSE. Non-ferrous metals can be hardened by heat treatment, although the mechanisms and processes involved may differ from ferrous metals.
Heat treatment techniques such as precipitation hardening can be used to increase the strength of non-ferrous metals. Non-ferrous metals are metals or alloys that do not include iron (or iron allotropes, such as ferrite, etc.) in significant quantities. Non-ferrous metals are employed because they have desired qualities like reduced weight (for example, aluminium), greater conductivity (for example, copper), non-magnetic characteristics, or corrosion resistance (for example, zinc), even though they are often more expensive than ferrous metals. In the iron and steel sectors, several non-ferrous materials are also employed. Bauxite, for instance, is used as a flux in blast furnaces, whereas wolframite, pyrolusite, and chromite are utilised to create ferrous alloys.
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Why is water a special chemical as a solid versus a liquid?
Why is water a special chemical to all life on earth?
What are the characteristics of water?
Answers
Answer:
Water is a special element because it is the one main source that keeps us alive
Explanation:
Water can be solid or liquid
Nucle acids are made up of smaller subunits called
Answers
Nucleic acids are made up of smaller subunits called nucleotides
Nucleotides, which are smaller components, make up nucleic acids. A monomer, also known as a building block, of nucleic acids like RNA and DNA is known as a nucleotide. A repeating pattern of the sugar-phosphate backbone with the nitrogenous bases spreading out as the rungs"of the DNA or RNA ladder is created.
The ladder is created when nucleotides are connected together by covalent bonds established between the phosphate group of one nucleotide and the sugar molecule of another nucleotide. This configuration of nucleotides creates the double helix structure in DNA and a number of secondary structures in RNA, which are essential for their biological roles as genetic information carriers and transmitters.
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Which organism described below is responsible for returning nutrients to the soil?
A.
American plum because it is an autotroph
B.
Golden mycena because it is a decomposer
C.
Metallic Wood Borer because it is a consumer
D.
White Tailed deer because it is an herbivore
Answers
Can we create matter? Why or why not?
Answers
Answer:
The first law of thermodynamics doesn't actually specify that matter can neither be created nor destroyed So yes we can create matter because matter is every where buildings ,structures etc. So the answer is yes!
Explanation:
Hope this helped!ヾ(•ω•`)o❤
45 °C Sample Final volume (mL) 27.70
Initial volume (ml) 50.00 Total volume (mL) 22.30 [B4O5(OH)4 2-leg(M) _____ Ksp ______
Answers
The Ksp for\([B_4O_5(OH)_4]_2\)- at 45 °C is 3.42 x \(10^{-13}\).
The solubility of \([B_4O_5(OH)_4]_2\)- in water at 45 °C is given as 0.023 M. We can use this information to calculate the Ksp for \([B_4O_5(OH)_4]_2\) at this temperature.
The dissolution reaction for\([B_4O_5(OH)_4]_2\)- can be written as:
\(B_4O_5(OH)_4\)(s) ↔ \(4B(OH)_4\)-(aq) + 2H+(aq)
he equilibrium expression for this reaction is:
Ksp = \([B(OH)_4-]_4 [H+]_2\)
Assuming the solubility of\([B_4O_5(OH)_4]_2\)- is x M, then the concentration of \([B(OH)_4-]\)and H+ will be 4x and 2x, respectively. Substituting these values in the equilibrium expression, we get:
Ksp = (4x)4 (2x)2 = 128x6
Solubility of \([B_4O_5(OH)_4]_2\)- at 45 °C, we get:
Ksp = 128 (0.023)6 = 3.42 x\(10^{-13}.\)
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--The complete Question is, At 45 °C, the solubility of [B4O5(OH)4]2- in water is found to be 0.023 M. What is the Ksp for [B4O5(OH)4]2- at this temperature? --
Explain why the kidneys are important to our survival
1. They filter waste from the blood
2. They remove urine from the body
3. They increase the sugar level in the blood
4. They make new blood for the body
Answers
The kidneys are important to our survival because they play a critical role in maintaining the balance of fluids and electrolytes in the body, as well as removing waste and toxins from the blood. Options 1 and 2 are correct.
The kidneys filter waste from the blood, such as excess water, salts, urea, and other waste products. They remove urine from the body, which helps to maintain the proper balance of fluids and electrolytes in the body. The kidneys do not increase the sugar level in the blood, but they do play a role in regulating blood sugar levels by producing hormones such as renin and erythropoietin.
The kidneys do not make new blood for the body, but they do produce a hormone called erythropoietin that stimulates the production of red blood cells in the bone marrow. The kidneys are essential to our survival because they help maintain the proper balance of fluids and electrolytes, remove waste and toxins from the blood, and play a role in regulating blood pressure and red blood cell production. Options 1 and 2 are correct.
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In the given reaction, the Ag + ions,. Ni + 2Ag --> Ni2+ + 2 Ag
Answers
Silver ions (Ag+) are reduced by nickel metal (Ni) to create nickel ions (Ni2+) and silver metal (Ag) in the described process. During the reaction, two silver ions are reduced, yielding two silver atoms, whereas one nickel atom is oxidized, yielding one nickel ion.
The balanced chemical equation for the reaction is:
Ni + 2Ag+ → Ni2+ + 2Ag
This is a redox process, with nickel acting as the reducing agent and silver ions acting as the oxidizing agent. Nickel metal loses electrons (oxidizes), whereas silver ions acquire electrons (reduces). As a result, electrons are transferred from nickel ions to silver ions, resulting in the creation of nickel ions and solid silver metal.
This reaction is extensively employed in electrochemistry and the manufacture of silver-coated materials.
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Complete question:
Consider the cell reaction of electrochemical cell : Ni(s) + 2Ag+ (aq) → Ni2+ (aq) + 2Ag(s) and answer the following questions:
(i) Write anode and cathode half reactions.
(ii) Mention the direction of flow of electrons.
(iii) How is the electrical neutrality maintained in the solutions of the two half cells?
(iv) Write the formula for calculating standard emf of this cell.
(v) How does the emf change when the concentration of silver ions decreases?
Which of the following are characteristics of a temperate broadleaf forest? (Select all that apply.)
They contain mainly coniferous trees.
They experience all four seasons.
They can be found along the Atlantic coast of the United States.
They are very dry and receive little to no rainfall.
Answers
Answer:
They can be found along the Atlantic coast of the United States.
They experience all four seasons.
Explanation:
The characteristic of temperate broadleaf forests are they can be found along the Atlantic coast of the United States and experience all four seasons.
What is temperate broadleaf forest?As the name suggested that temperate broadleaf forests are those forests in which temperature througout the year is moderate and leaf of the tress are broad in shape.
As in that forest temperature is mild but that forest will experience all four seasons.Quality of soil of this forest is rich in minerals.Tress which are mostly present in this forests are oak, maple, beech, hickory, etc which are having broad leaves.They are generally found in central China and eastern North America, means along the Atlantic coast of the United States.Hence they can be found along the Atlantic coast of the United States and experience all four seasons are the characteristics of this forest.
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The symbol equation below shows the thermal decomposition of copper carbonate. CuCO3(s)→CuO(s)+CO2(g)CuCOX3(s)CuO(s)+COX2(g) Calculate the mass of solid product that would be made if 45 g of copper carbonate decomposes completely. Give your answer in g to 2 s.f.
Answers
According to the stoichiometry of the given chemical equation, the mass of solid product formed that is CuO is 28.97 g.
What is stoichiometry?It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
123.55 g copper carbonate gives 79.54 g copper oxide thus, 45 g copper carbonate will give 45×79.54/123.55=28.97 g.
Thus, the mass of solid product formed that is CuO is 28.97 g.
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Why is an HCl molecule polar but a Cl2 molecule is nonpolar?
Answers
A polar substance is HCl. Due to its higher electronegative nature and unequal distribution of the bonding electrons with Hydrogen in the HCl molecule, Chlorine (Cl) atom (H). Yet, the molecules H2 and Cl2 are not polar since both atoms in the molecules have similar electronegativity.
As the bonds between the two atoms in the Cl2 Cl 2 molecule are identical, it is nonpolar. Hence, the electronegativity of the two atoms would not differ from one another. As a result of the nonpolar nature of the bond, the entire molecule is also nonpolar. The shared pair of electrons in a chlorine molecule (Cl2) is attracted to both chlorine atoms in an equal amount, creating a nonpolar connection.Chlorine is therefore a non-polar chemical. Yet, the bonding electrons in H-Cl are not distributed equally between the two atoms. As it has a linear symmetry and two chlorine atoms with equal electronegativity, Cl2 (chlorine) is nonpolar in nature. Because of the same charge distribution on both atoms and the molecule's zero dipole moment, the chlorine molecule is nonpolar.
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Draw the stracture of 2-bromo-4-chloro-3, 3-dimethylhex-1-ene
Answers
answer :
this is the structure if you want it
A sample of ethanol (C2H6O) has a mass of 0.2301 g. Complete combustion of this sample causes the temperature of a bomb calorimeter to increase by 1.33°C. The calorimeter has a mass of 2.000 kg and a specific heat of 2.45 J/g•°C.
Answers
The number of mole of ethanol present in the sample is 0.005 mole
Description of moleThe mole of a substance is related to it's mass and molar mass according to the following equation
Mole = mass / molar mass
With the above formula, we can obtain the mole of ethanol
How to determine the mole of ethanolMass of ethanol = 0.2301 gMolar mass of ethanol = 46 g/molMole of ethanol = ?Mole = mass / molar mass
Mole of ethanol = 0.2301 / 46
Mole of ethanol = 0.005 mole
Complete question
A sample of ethanol (C2H6O) has a mass of 0.2301 g. Complete combustion of this sample causes the temperature of a bomb calorimeter to increase by 1.33°C. The calorimeter has a mass of 2.000 kg and a specific heat of 2.45 J/g•°C. How many moles of ethanol are present in the sample?
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Sandy went to the candy store and wanted to use dimensional analysis she had learned in class. She only had a certain amount of money to spend. In terms of price, she figured out the following: 6 lollipops = 5 gum balls, 10 lemon heads = 16 redhots, 8 gum balls = 9 lemon heads. If sandy knows she could buy 3 lollipops, how many lemonheads could she buy with the same money?
Answers
Answer:
about 1-60
Explanation:
Answer:
she could get 3.6 lemon heads so 3
An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. What is its mass number? *
Answers
Answer:
26.981539
Explanation:
the graph below shows a reaction with a catalyst. How did the addition of the cataalyst change the graph
Answers
Answer:
Section 2 will decrease.
Explanation:
A catalyst is a substance that increases the rate of the chemical reaction without taking part in the overall reaction. Catalysts speed up a reaction by lowering the activation energy needed for a reaction to take place. The activation energy is the minimum energy necessary for a reaction to take place. As such, when a catalyst is added, the activation energy (or the potential energy) needed to start the reaction decreases. This shows itself in the graph by decreasing the "hump" in Section 2.
It should be noted that Sections 1 and 3 will remain the same. This is because the energy of the reactants and products does not change regardless of a catalyst being present.