JEE MAIN - Chemistry (2023 - 1st February Evening Shift - No. 8)
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : $$\mathrm{Cu^{2+}}$$ in water is more stable than $$\mathrm{Cu^{+}}$$.
Reason (R) : Enthalpy of hydration for $$\mathrm{Cu^{2+}}$$ is much less than that of $$\mathrm{Cu^{+}}$$.
In the light of the above statements, choose the correct answer from the options given below :
(A) is correct but (R) is not correct
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
(A) is not correct but (R) is correct
Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation
Cu2+ ion is more stable than Cu+ ion due to high charge density on Cu2+ ion, it has higher hydration energy when it bonds to water molecules thus it forms stronger bonds.
$$ \therefore $$ (A) is correct but (R) is not correct.
$$ \therefore $$ (A) is correct but (R) is not correct.
Comments (0)
