Question

The weight of silver displaced by a quantity of electricity which displaces 5600ml of O2 at STP will be.............?

Answer 1

let x be the weight of the silver. Equivalent volume of O2is 5.6 lit
               ∴ 5.6 lit of O2 means 1 equivalent of oxygen
               & 1 equivalent of any species is displaced by 1 faraday charge
               & ∴ 1 equivalent i.e. 108g of Ag is deposited by 1 faraday of charge. therefore x = 108g

Answer 2

Answer:

Explanation:

2O^2- + 4e ---> O2(g)

4F are required for the production of 22.4lt of O2. Therefore, 1F will be required for the formation of 5.6 litres or 5600ml

Now 1F of electric charge will produce

Ag+ + 1e ---> Ag

It will produce 1 mole of Ag which is equal to 108 g.