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MHT CET Chemistry question

ChemistryElectrochemistryMHT CET

An aqueous solution of NaCl on electrolysis gives , and NaOH according to reaction, A direct current of 25 A with a current efficiency of 62% is passed through 20 L of NaCl solution (20% by weight). How long will it take to produce 1 kg of ?

Answer: (C)

Solution

1 kg of = 1000/71 = 14.08 mol, needing 28.17 mol of electrons = 2.718 × 10 C at 100% efficiency; at 62% efficiency the charge needed = 2.718 ×

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Question ID VK-066926