AIIMS 2018 Chemistry Vapor Pressure and Colligative Properties Assertion Reason Question
Assertion: When (aq) solution is electrolysed using copper electrodes, copper is dissolved at anode and copper gets deposited at cathode.
Reason: The standard oxidation potential of copper is less than the standard oxidation potential of water and standard reduction potential of copper is greater than the standard reduction potential of water.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Option C is correct because the assertion discusses the behavior of vapor pressures when two solvents are mixed, while the reason addresses the effect of a solute on the vapor pressure of a solvent. Although both statements are true, they describe different phenomena: Raoult's Law explains the vapor pressure changes in solvent mixtures, while the addition of a solute leads to a colligative property effect, specifically vapor pressure lowering. Other options are not applicable as they do not provide alternative explanations or scenarios relevant to the assertion and reason provided. Understanding these concepts is crucial for grasping the principles of vapor pressure in solutions.
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