JEE Mains Chemistry Past PapershardMCQ SINGLE

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as ReasoJEE Mains Chemistry Past Papers Chemistry Question

Question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cu2+ in water is more stable then Cu2+. Reason (R) : Enthalpy of hydration for Cu2+ is much less than of Cu+. In the light of the above statements, choose the correct answer from the options given below : (A) Both (A) and (R) are correct and (R) is the correct explanation of (A) (B) (A) is correct but (R) is not correct (C) Both (A) and (R) are correct but (R) is not the correct explanation of (A) (D) (A) is not correct but (R) is correct

Answer: A

💡 Solution & Explanation

In aqueous solution Cu+1 is unstable and it disproportionate. 2Cu+1  Cu(s) + Cu+2 (aq) Hydration energy of Cu2+ is higher than Cu+1 and this compensate it's ionisation energy. | JEE(Main) 2023 | DATE : 01-02-2023 (SHIFT-2) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 5

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