Question

Assertion :A current of $96.5$ ampere is passed into aqueous $AgN{O}_3$ solution for $100$ second. The weight of silver deposited is $10.8g$. (Atomic weight of $Ag=108$). Reason: The mass of a substance deposited during the electrolysis of an electrolyte is inversely proportional to the quantity of electricity passing through the electrolyte.

• 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

Using the formula, $w=zIt$

where, w = weight deposit

z = $\frac{Equiv}{96500}$

I = current

t = time

on putting the values, we get

weight of Ag deposited= 10.8g

so, assertion is correct;

According to Faraday's law, the mass of substance deposited is directly proportional to the quantity of current pass through the electrolyte

hence, the reason is incorrect.