Question

Assertion (A): The mass of copper and silver, posted on the cathode be same Reason (R): Copper and silver have different quivalent masses (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true but is not the correct explanation of A C) A is true but Ris false D) A false but R is true​

Answer 1

Answer:

Correct option is B)

Faraday's second law of electrolysis states that, when the same quantity of electricity is passed through several electrolytes, the mass of the substances deposited are proportional to their respective chemical equivalent or equivalent weight.

n=1 for Ag and hence it's equivalent weight is Eq. wt. of Ag=108

n=2 for Cu and hence it's equivalent weight is Eq. wt. of Cu=263.5=31.75

So here equivalent weight of silver and copper are different and hence Assertion is correct.

Reason is also correct as molecular weights of Ag and Cu are different. 

But the correct reason is because of there different equivalent weights but not molecular weights.

Answer 2

Answer:

a and r are true and r is the correct explanation