Question

Assertion :During electrolysis $48250$ coulombs of electricity will deposit $0.5$ gram equivalent of silver metal from $Ag$${}^{+}$ions. Reason: One Faraday of electricity will be required to deposit $0.5$ gram equivalent of any substance.

• 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 C Assertion is correct but Reason is incorrect

(A) $48250$ coulombs $=\frac{48250}{96500}\text{moles of electron}$

$=0.5\text{mole of electron}$

$A{g}^{+}+e^{-}\to Ag$

0.5 equivalent of $e^{-}$ give $0.5$ equivalents of $A{g}^{+}$

$1$ faraday gives $1$ mole of $e^{-}$, it not necessarily be $0.5-$equivalent of a substance