Question

Assertion :1 Faraday of electricity deposits 1 g equivalent of Ag, Cu or Al. Reason: 1 mole of electrons are required to reduce 1 mole of $A{g}^{\oplus }$ or $\frac{1}{2}$ mole of $C{u}^{2+}$ or $\frac{1}{3}$ mole of $A{l}^{3+}$ ions.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Assertion is incorrect but Reason is correct

Answer 1

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Both (A) and (R) are correct. But (R) is independent of (A) , i.e., not the explanation of (A).

1 F $\equiv$ 1 Eq of any compound

i.e., 1 F = 1 Eq of $A{g}^{\oplus }$ $\equiv$ 1 Eq of $C{u}^{2+}\equiv$ 1 Eq of $A{l}^{3+}$

$=\frac{1}{1}$ mol of $A{g}^{\oplus }\equiv \frac{1}{2}$ mol of $C{u}^{2+}$ = $\frac{1}{3}$ mole of $A{l}^{3+}$