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

Question

108 g of silver (molar mass 108 g m o l - 1 ) is deposited at cathode from A g N O 3 (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, 2.82 L, 5.675 L, 1.41 L, 0.746 L

MARKS App · Accepted Answer

[ n A g ] d e p o s i t = 108 108 = 1 m o l e A g + + 1 e - → A g 1F charge is required for 1 mole of Ag H 2 O → 1 2 O 2 + 2 H + + 2 e - 2F charge deposit = 1 2 mole 1F charge deposit = 1 4 mole P V = n R T V = 1 4 × 0. 0821 × 273 1 V = 5.675 L

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