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JEE Main 2020 Chemistry question

ChemistryElectrochemistryJEE Main 2020

108 g of silver (molar mass 108 g ) is deposited at cathode from (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: 5.67

Solution

1 mol Ag needs 1 F; 4 F liberate 1 mol O2, so n(O2) = 0.25 mol and V = nRT/P = 0.25 × 0.0831 × 273

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Question ID VK-011026