Question

108 g of silver (molar mass 108 g mol^–1) is deposited at cathode from AgNO₃(aq) solution by a certain quantity of electricity. The volume (in L) of oxygen gas produced at 273 K and 1 bar pressure from water by the same quantity of electricity is _______.

Answer 1

Volume of O₂ at STP = 1/4 × 22.4 = 5.6 lit

Answer 2

gm eq. of Ag = 108/108 = 1

gm eq. of O₂(g) = 1

Volume of O₂(g) = 22.7 x 1/4 = 5.675 litre