108 g of silver (molar mass 108 g m o l - 1 ) is deposited at cathode from A g N O 3 a q 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 ________

Step-by-step solution

n A g d e p o s i t = 108 108 = 1  m o l e Ag + + e - ⟶ Ag 1 F charge is required to deposit 1   mole of Ag H 2 O ⟶ 1 2 O 2 + 2 H + + 2 e - 2 F charge is required to deposit 1 2 m o l e 1 F charge will deposit 1 4 m o l e of O 2 gas. V O 2 = n R T P = 1 4 × 0.0821 × 273 1 = 1 4 × 22.4 V O 2 = 5.6  L 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 pr