Balance each of the following redox reactions occurring in acidic aqueous solution. Part A Zn(s) + Sn² + (aq) → Zn² (aq) + Sn(s)
Answers
The balanced equation in acidic aqueous solution is: Zn(s) + Sn²+(aq) + 2H⁺(aq) → Zn²+(aq) + Sn(s) + H₂O(l).
To balance the redox reaction Zn(s) + Sn²+(aq) → Zn²+(aq) + Sn(s) in acidic aqueous solution, we follow the steps of the half-reaction method.
First, we identify the oxidation and reduction half-reactions:
Oxidation half-reaction: Zn(s) → Zn²+(aq)
Reduction half-reaction: Sn²+(aq) → Sn(s)
Next, we balance the atoms in each half-reaction by adding water molecules and hydrogen ions (H⁺) as needed. In this case, no water molecules are needed, but we need to balance the charge with hydrogen ions:
Oxidation: Zn(s) → Zn²+(aq) + 2e⁻
Reduction: Sn²+(aq) + 2H⁺(aq) → Sn(s) + H₂O(l) + 2e⁻
Now, we balance the number of electrons transferred in each half-reaction by multiplying one or both of the half-reactions by appropriate coefficients. In this case, both half-reactions have 2 electrons, so no additional coefficients are needed.
Finally, we add the two half-reactions together, canceling out the electrons, and ensuring that the number of atoms and charges are balanced:
Zn(s) + Sn²+(aq) + 2H⁺(aq) → Zn²+(aq) + Sn(s) + H₂O(l)
The balanced equation in acidic aqueous solution is: Zn(s) + Sn²+(aq) + 2H⁺(aq) → Zn²+(aq) + Sn(s) + H₂O(l).
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Related Questions
2 moles of NO, was placed in an empty I dm' bottle and allowed to reach equilibrium according to the equation:
At equilibrium, 1.2 moles of N,O, dissociated. Calculate the value of the equilibrium constant for the reaction at that
temperature.
Answers
2NO(g) ⇌ N2(g) + O2(g)
According to the problem statement, 2 moles of NO were placed in a 1 dm^3 bottle and allowed to reach equilibrium, and at equilibrium, 1.2 moles of NO had dissociated. This means that the initial concentration of NO was:
[NO]initial = 2 mol / 1 dm^3 = 2 M
And the concentration of NO at equilibrium is:
[NO]equilibrium = (2 - 1.2) mol / 1 dm^3 = 0.8 M
Since the stoichiometry of the balanced equation is 2:1:1 for NO, N2, and O2, respectively, the equilibrium concentrations of N2 and O2 will also be 0.6 M.
The equilibrium constant (Kc) can be calculated using the equilibrium concentrations of the reactants and products, raised to the power of their stoichiometric coefficients. Therefore:
Kc = ([N2][O2]) / ([NO]^2)
Substituting the equilibrium concentrations into the equation, we get:
Kc = (0.6 M x 0.6 M) / (0.8 M x 0.8 M)
Kc = 0.5625
Therefore, the value of the equilibrium constant for the reaction at that temperature is 0.5625. Note that the units of Kc depend on the stoichiometry of the balanced equation. Since the stoichiometric coefficients are all 1, the units of Kc in this case are M^-1
the alkane c7h16 exhibits structural isomerism. in fact, 9 structural isomers have this same formula (but different bond arrangements). one such isomeric structure is:
Answers
Systematic name of this structure is 3-ethylpentane.
Chemical compounds known as isomers have identical chemical formulae but have different properties and atom arrangements inside the molecule. The term "isomer" refers to a substance that exhibits isomerism.
Structural isomers are substances with the same molecular formula but distinct atomic configurations. The way the atoms are attached in this instance is quite different, as seen by the different types of chains that are formed (straight versus branched), the placements of the atoms (such as middle versus end of the parent chain), and the presence of functional groups (e.g., aldehydes versus ketones).
For instance, although sharing the same molecular formula (C3H6O), propanal and propanone have very distinct chemical structures. They are structural isomers as a result.
Isomers of Heptane are:
Heptane (n-heptane)2-Methylhexane (iso-heptane)3-Methylhexane2,2-Dimethylpentane (neo-heptane)2,3-Dimethylpentane2,4-Dimethylpentane3,3-Dimethylpentane3-Ethylpentane2,2,3-TrimethylbutaneTo learn more about isomers, refer:
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The complete question is: The alkane C7H16 exhibits structural isomerism. In fact, 9 structural isomers have this same formula (but different bond arrangements). One such isomeric structure is: What is the correct systematic name for this structure?
If the Antarctic plate is estimated to move 2. 05 cm per year, how long did it take for the plate to move from point A to point B?
Answers
Answer:
They move at a rate of one to two inches (three to five centimeters) per year.
Explanation:
The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into one another; divergent, where plates move apart; and transform, where plates move sideways in relation to each other.
All molecules have London forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present we
can ignore London forces. Only NONPOLAR molecules will SHOW LDF. Which of these has ONLY LDFs?
A. I2
B. HF
C. NH3
D.H2S
Answers
Answer:
a
Explanation:
khan academy
Among the options given, only \(I_2\) shows London-Dispersion forces. Thus, the correct option for this question is A.
What is the London-Dispersion force?The London-Dispersion force may be defined as a type of provisional attractive force that arises when the electrons in two adjacent atoms tenanted positions that construct the atoms to form temporary dipoles. It is considered the weakest intermolecular force.
\(H_2S\) shows dipole-dipole interactions because hydrogen and sulfur have huge electronegative differences. Due to this, their bonds are polar. \(NH_3\) shows hydrogen bonding between them. HF shows dipole-dipole interactions because it is a polar covalent molecule.
Therefore, only \(I_2\) shows London-Dispersion forces. Thus, the correct option for this question is A.
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Consider the following half-reaction balanced for an acidic solution: 2H2O + SeO2 → SeO42- + 4H+ + 2e-. What is the balanced half-reaction for a basic solution?
Answers
Answer
\(SeO_2+4OH^-\rightarrow SeO^{2-}_4+2H_2O+2e^-\)Explanation
The given balanced half-reaction for an acidic solution:
\(2H_2O+SeO_2\rightarrow SeO^{2-}_4+4H^++2e^-\)What to find:
Tha balanced half-reaction for a basic solution.
Step-by-step-solution:
To balance the half-reaction for a basic solution;
1. Add OH⁻ ions to BOTH SIDES to neutralize any H⁺
\(2H_2O+SeO_2+4OH^-\rightarrow SeO^{2-}_4+4H^++4OH^-+2e^-\)2. Combine H+ and OH- to make H2O.
\(2H_2O+SeO_2+4OH^-\rightarrow SeO^{2-}_4+4H_2O+2e^-\)3. Simplify by canceling out excess H2O
\(SeO_2+4OH^-\rightarrow SeO^{2-}_4+2H_2O+2e^-\)4. Balance the charges by adding e-
\(SeO_2+4OH^-\rightarrow SeO^{2-}_4+2H_2O+2e^-\)what is the purpose of changing the eluting solvent from pentane to ether between the two fractions? please explain your answer, being sure to mention important intermolecular forces and how they relate to the compounds being eluted
Answers
We are aware that ether is a polar solvent and pentane is an apolar one. The less polar material moves quicker while more polar component travels slower.
By use of polar interactions, the sample that has to be separated will be adsorbed to the stationary phase comprised of alumina or silica gel. The eluting solvent will be used to elute these adsorbed molecules. Both polar and non-polar solvents may be used as these eluting agents. The interactions with the polar molecules that are adsorbed to the chromatographic column grow when the polarity of the eluting solvent is increased. Pentane is less polar than ether when compared. As a result, polar molecules are separated from and eluted from the stationary phase using ether. This is due to the fact that polar solvents may dissolve polar substances due to polar interactions.
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A Na+ ion moves from inside a cell, where the electric potential is -70 mV, to outside the cell, where the potential is 0 V.What is the change in the ion's electric potential energy as it moves from inside to outside the cell?does its energy increase or decrease
Answers
To determine the change in the Na+ ion's electric potential energy as it moves from inside to outside the cell, we'll use the following formula:
\(ΔPE = q * ΔV\)
Where ΔPE is the change in electric potential energy, q is the charge of the ion (Na+ in this case), and ΔV is the change in electric potential.
Step 1: Determine the charge of the Na+ ion (q)
The charge of a sodium ion (Na+) is +1, so its charge is +1 times the elementary charge: \(q = +1 * 1.6 × 10^(-19) C.\)
Step 2: Determine the change in electric potential (ΔV)
ΔV = V_outside - V_inside = 0 V - (-70 mV) = 0 V - (-0.07 V) = 0.07 V
Step 3: Calculate the change in electric potential energy (ΔPE)
\(ΔPE = q * ΔV = (+1 * 1.6 × 10^(-19) C) * (0.07 V) = 1.12 × 10^(-20) J\)
The change in the ion's electric potential energy as it moves from inside to outside the cell is 1.12 × 10^(-20) J. Since this value is positive, the ion's electric potential energy increases as it moves from inside to outside the cell.
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What is the density of 37.72 of material whose volume is 6.80cm
Answers
Answer: Density is mass per unit volume. You have supplied both measurements, so simply take the quotient.
Explanation: Density, p,=37.72⋅g6.80⋅cm3=??g⋅cm−3
you are at sea level and have a beaker with no lid that contains 250 ml of distilled water. what is the water potential of the distilled water in the beaker?
Answers
The water potential of the distilled water in the beaker at sea level is equal to the pressure potential, which is approximately 101.3 kPa.
The water potential of the distilled water in the beaker at sea level can be determined by considering the external factors that can affect water potential. In this case, the external factors are atmospheric pressure and gravity. At sea level, the atmospheric pressure is approximately 101.3 kilopascals (kPa). The pressure potential is the contribution of atmospheric pressure to the overall water potential.
Since the beaker is open and exposed to the atmosphere, the pressure potential is equal to the atmospheric pressure. Gravity also affects the water potential. However, at sea level, the gravitational potential is assumed to be zero because the water is already at the lowest possible elevation. Therefore, the water potential of the distilled water in the beaker at sea level is equal to the pressure potential, which is approximately 101.3 kPa.
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what is a neutral atom of nitrogen-14
Answers
Answer:
You know that nitrogen-14 has 7 protons in the nucleus because it is an isotope of nitrogen, which has an atomic number equal to 7 . Because nitrogen-14 is a neutral atom, the number of protons it has in its nucleus must be equal to the number of electrons that surround its nucleus.
find ionic compounds
Answers
Answer:
1:1
Explanation:
The ratio of metal cationic atom to non-metal anionic atom in the compound is 1:1.
This is an ionic compound.
This is because metal cationic atom has two valence electrons. Non-metal anionic oxygen has six valence electrons Calcium loses two of its valence electrons to be isoelectronic with Ar and this confers a stable configuration to it. Non-metal oxygen atom accepts the electrons and adds 2 to its 6 electrons to become isoelectronic with neon. So, 1 metal cationic atom combines with 1 non-metal anionic atom to form the compound.
27. Write balanced equations that describe the following reactions.
a. the dissociation of perchloric acid in water
b. the dissociation of propanoic acid (CH3CH2CO2H) in
water
c. the dissociation of ammonium ion in water
Answers
#a
HClO_4(aq)+H2O(l)—»H3O+(aq)+ClO_4#b
CH3CH2COOH + H2O ==> CH3COO^- +H3O#c
This is reversible reaction
H2O + NH_3 ⇄ OH^- + NH4^+Why is the Milky Way considered a galaxy
Answers
Answer:
Explanation:
All the stars we see in the night sky are in our own Milky Way Galaxy. Our galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a really dark area.
Answer: it is
Explanation: A galaxy is a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction, plus there are 100 billion planet in it.
Which of the structures shown are examples of the monobrominated compounds (including stereoisomers) produced when 2-propyl-1-pentene is treated with nbs and uv light irradiation?.
Answers
The monobrominated compounds produced when 2-propyl-1-pentene is treated with NBS and UV light irradiation are the compounds that contain a bromine atom bonded to a single carbon atom within the 2-propyl-1-pentene molecule.
When 2-propyl-1-pentene undergoes bromination using NBS (N-bromosuccinimide) and UV light, the reaction occurs via a radical mechanism. This leads to the substitution of a hydrogen atom with a bromine atom, resulting in the formation of monobrominated compounds.
To determine the specific monobrominated compounds and their stereoisomers, it is necessary to analyze the structure of 2-propyl-1-pentene and consider the possible sites of bromination. 2-propyl-1-pentene has multiple carbon atoms that could potentially undergo bromination, leading to different structural isomers.
By introducing a bromine atom at various positions within the 2-propyl-1-pentene molecule, different monobrominated compounds can be formed. These compounds may exhibit stereoisomerism if there are chiral centers present in the original molecule.
To provide a comprehensive answer, the specific structures of the monobrominated compounds and their stereoisomers resulting from the reaction would need to be analyzed and described.
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3. Why do you think that the Jupiter, Saturn, Uranus, and Neptune have a stronger poil of gravity than the other
planets?
Answers
Answer:
has a magnetic field surrounding it
Explanation:
In what order should the options appear so as to correctly reflect the order of clomiphene's mechanism of action
Answers
The order which reflect clomiphene's mechanism of action include the following:
Secretion of increased amount of follicle stimulating hormone (FSH) and LH (luteinizing hormone).Growth of the ovarian follicle.Ovulation.What is Ovulation?This is the process in which a mature egg is released from the ovary and clomiphene is a medication which induces it.
This is done by the steps mentioned above so as to ensure mature egg is released for fertilization.
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A 10-gram rubber ball was launched at a wall several times. The speed of the ball was measured after it hit the wall and bounced
off. The force that the ball applied to the wall was also measured. The table below shows the data collected during the investigation.
Force Investigation Data
Force on Wall Return Speed after Bounce
5 m/s
1.5 N
9 m/s
2.0 N
18 m/s
0.5 N
According to the data, what happens to the ball when it applies more force to the wall?
Answers
Answer: A. The wall push back on the ball with more force, which causes the return speed of the to increase.
Explanation: For every for exerted on an object, there is an equal force exerted in the opposite direction. When the ball hits the wall with more force, the wall pushes back on the ball with more force. This causes the return speed of the ball to increase. The force that the wall applies to the ball launches the ball in the opposite direction. The greater the force on the ball, the greater it’s speed becomes .
Answer: The wall pushes back on the ball with more force, which causes the return speed of the ball to increase.
Explanation: Correct on Study Island
Tim would like to know the mass of two boxes. Instead of Tim looking at the boxes to determine their mass, what should Tim use to accurately
determine the mass of each box
Answers
Answer:
The triple beam balance
In a solution the hydroxide ion concentration is 1 ✕ 10-12 M. What is the pH of the solution?
What is the pOH of the solution?
The above solution is
Answers
Answer:
pH = 2 and pOH = 12
Explanation:
Given [OH⁻] = 1 x 10⁻¹²M
pOH = -log[OH⁻] = -log(1 x 10⁻¹²) = - ( -12 ) = 12
pH + pOH = 14 => pH = 14 - pOH = 14 - 12 = 2
Please help i cant find any answers...
Using the balanced equation below,
how many grams of cesium xenon
heptafluoride would be produced
from the complete reaction of 37.8 g
cesium fluoride?
CSF + XeF6 CsXeF7
Answers
Answer:
98.8
Explanation:
CsF + XeF6 --> CsXeF7
37.8g ................. ?g
37.8g CsF x (1 mol CsF / 151.9g CsF) x (1 mol CsXeF7 / 1 mol CsF) x (397.2g CsXeF7 / 1 mol CsXeF7) = 98.8g CsXeF7 .......... to three significant digits
Answer:
28.0
Explanation:
The displacement total volume of cylinders of the engine in a Ford Mustang is 5.0L convert this to cubic inches
Answers
To convert the displacement total volume of cylinders of the engine in a Ford Mustang from 5.0L to cubic inches, we need to use the conversion factor between liters and cubic inches.
One liter is equivalent to 61.0237 cubic inches. First, we can write the given displacement in cubic centimeters as follows:5.0 L = 5.0 x 1000 mL = 5000 mL1 mL = 0.0610237 cubic inches 5000 mL = 5000 x 0.0610237 cubic inches= 305.1185 cubic inches
Therefore, the displacement total volume of cylinders of the engine in a Ford Mustang is equivalent to 305.1185 cubic inches.
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for the elements with the electron affinities given in the table in the introduction, which element is most likely to accept an electron?view available hint(s)for part N SrBr
Answers
To determine which element is most likely to accept an electron, we need to consider the electron affinities given in the table. The element with the highest electron affinity will be the most likely to accept an electron.
Step 1: Examine the electron affinities in the table provided.
Step 2: Identify the element with the highest electron affinity value.
Step 3: Conclude which element is most likely to accept an electron based on the highest electron affinity.
Based on the electron affinities given in the introduction table, the element that is most likely to accept an electron is chlorine (Cl). Chlorine has the highest electron affinity among the listed elements, indicating that it has the strongest attraction for an additional electron.
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Question 14 PM2.5 is defined as ________
- the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter. - the mass concentration of particles in the air equal to 2.5 micrometers in diameter. - the mass concentration of particles in the air greater than or equal to 2.5 micrometers in diameter. Question 15 Carbon dioxide (CO2) is a criteria air pollutant. - True - False Question 16 Roughly percent of emissions of carbon monoxide in Santa Clara County come from mobile sources (select the choice closest to the correct answer). - 50 - 75 - 25 Question 17
The term "photochemical smog" is most synonymous with which of the following criteria air pollutants? - lead (Pb) - carbon monoxide (CO) - sulfur dioxide ( SO2) - ozone (O3) Question 18 "Attainment" of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards. - True - False
Answers
: PM2.5 is defined as the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter.Question 15: False, carbon dioxide (CO2) is not considered a criteria air pollutant.
Question 16: The closest answer is 50%, but the exact percentage is not provided in the question.Question 17: The term "photochemical smog" is most synonymous with ozone (O3), which is a criteria air pollutant.Question 18: True, attainment of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards.
Question 14 asks about the definition of PM2.5. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 micrometers. It represents the mass concentration of particles suspended in the air, which are small enough to be inhaled into the respiratory system and can have adverse health effects.
Question 15 states whether carbon dioxide (CO2) is a criteria air pollutant. Criteria air pollutants are a set of pollutants regulated by environmental agencies due to their detrimental impact on air quality and human health. However, carbon dioxide is not considered a criteria air pollutant because it does not directly cause harm to human health or the environment in the same way as pollutants like ozone or particulate matter.
Question 16 asks about the percentage of carbon monoxide (CO) emissions from mobile sources in Santa Clara County. While the exact percentage is not provided in the question, the closest answer option is 50%. However, it is important to note that the precise percentage may vary depending on specific local conditions and emissions sources.
Question 17 inquires about the criteria air pollutant most synonymous with the term "photochemical smog." Photochemical smog is primarily associated with high levels of ground-level ozone (O3). Ozone is formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, creating a hazy and polluted atmospheric condition.
Question 18 addresses the concept of "attainment" of ambient air quality standards. To achieve attainment, measured concentrations of pollutants at all monitoring stations within an air district must be below the established ambient air quality standards. This ensures that the air quality in the given area meets the required standards for protecting human health and the environment.
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Why was the creation of element 114 so special?
Answers
Answer:
It is classified as a metal and is expected to be solid at room temperature.
Explanation:
not sure but i guess it is that
How many moles are in 11.2 L of helium gas?
Answers
Answer:
16 is the answer
Explanation:
0.5 x 32 = 16
When a vacancy exists in an inner electron shell of an atom (as a result of photoelectric effect, Compton scattering, or bombardment by other electrons), the energy liberated when this vacancy is filled, instead of emerging from the atom as fluorescent radiation, can be transferred to another electron of the atom, thereby ejecting the electron. Such an emitted electron is called a(n) _____ electron
Answers
Answer:
The answer is "Auger".
Explanation:
The Auger effect is an effect size when the vacancy of even an atom throughout the inner shell was complemented by the release of even an electron from the same atom. Whenever a central electron is lost, a higher energy level electron can drop into the void and release energy, which can be the result.
What mass of sucrose needs to be dissolved into water in order to prepare a 15% by mass solution with a total mass of 650 g
Answers
The mass of sucrose needs to be dissolved will be "97.5 g".
SucroseA cube of sugar or sweetener that is composed of yet another molecule of glucose as well as one component of fructose linked simultaneously.
According to the question,
Mass percentage = 15%
Total mass = 650 g
Let,
The mass of sucrose be "x".
Now,
The mass of sucrose will be:
→ 0.15 = \(\frac{x}{650}\)
By applying cross-multiplication, we get
x = 0.15 × 650
= 97.5 g
Thus the above answer is appropriate.
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The burden of reporting the storage and use of hazardous materials rests with:
Select one:
a. fire inspectors.
b. the fire department.
c. manufacturers.
d. the business.
Answers
The burden of reporting the storage and use of hazardous materials rests with: d. the business.
:The storage and use of hazardous materials are subject to regulations and requirements imposed by government agencies to ensure safety and mitigate risks.
Businesses that handle or store hazardous materials are responsible for complying with these regulations and reporting their activities to the appropriate authorities.
This includes identifying and classifying the hazardous materials, maintaining accurate records, and submitting reports as required by local, state, and federal regulations.
The business is responsible for keeping track of the quantities, types, and locations of hazardous materials on their premises, as well as any changes in their use or storage.
They are also responsible for providing necessary documentation and information to emergency response agencies, fire departments, or other relevant authorities as requested or required.
Fire inspectors and the fire department may play a role in inspecting businesses for compliance and ensuring proper handling of hazardous materials, but the primary responsibility for reporting lies with the business itself.
Manufacturers of hazardous materials have their own reporting obligations, such as providing safety data sheets (SDS) and labeling the products correctly, but the burden of reporting the storage and use of these materials at a specific location rests with the business using them.
Therefore, the correct answer is d. the business.
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Which of the following is a reasonable explanation for the effect that stirring or agitation has on the dissolution rate?
A.
The water molecules have more kinetic energy and have a greater chance of interacting with (and dissolving) the potassium iodide.
B.
The water molecules have an increased charge, since stirring removes electrons from the molecules. This increases the chance of a potassium ion being attracted to water.
C.
Stirring converts large amounts of energy into heat from friction and the heat increases the dissolution rate.
D.
Stirring breaks the bonds between water molecules so that they are free to bond with the potassium and iodine ions.
Answers
The water molecules have more kinetic energy and have a greater chance of interacting with (and dissolving) the potassium iodide.
What is the effect of stirring on the dissolution rate?Stirring breaks a solute into smaller pieces which increases its surface area as well as its rate of dissolution. Stirring brings unused portions of the solvent in contact with the solute which allows the solute to dissolve faster.
So we can conclude that option A is the right answer.
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You are a forensic scientist working for a police department. One piece of evidence from your current case is a letter written in a strange ink. You must separate the pigments in the ink to determine what it is made from. What procedure should you use?
A. Distillation
B. Chromatography
C. Evaporation
D. Filtering
Answers
Answer: b. Chromatography
Explanation:
Chromatography procedure will be used to separate the pigments in the ink.
To carry out this procedure, a small ink-dot is placed at the end of a filter paper. This ink-dotted end of the filter paper is then placed in a solvent.
As the solvent moves up the filter paper, it dissolves the ink mixture and spreads its component pigment across the paper.