Chemistry-Transition Elements
NEET Chemistry Transition Elements Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 12
Assertion (A): Copper(I) compounds are unstable in aqueous solution and undergo disproportionation. | Reason (R): The stability of Cu2+ (aq) is due to the much more negative hydration enthalpy compared to Cu+.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false.
Correct Answer
Option A
Detailed Explanation
Both the assertion and reason are true. Copper(I) compounds are unstable in aqueous solution due to disproportionation, and this instability is explained by the more negative hydration enthalpy of Cu2+ compared to Cu+, as stated in the NCERT context.
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