Question

During the electrolysis of molten NaCl, the time required to produce 0.10 mol of Cl₂ gas using a current of 2 amperes is ____________.

Options

• 2.68 minutes

• 96.5 minutes

• 160.8 minutes

• 220.5 minutes

Answer 1

During the electrolysis of molten NaCl, the time required to produce 0.10 mol of Cl₂ gas using a current of 2 amperes is 160.8 minutes.

Explanation:

At anode: \[\ce{2Cl^- -> Cl2 + 2e^-}\]

∴ 2 F (i.e., 2 × 96500 C) of electricity is required to produce 1 mol of Cl₂ gas.

∴ 0.2 F (i.e., 0.2 × 96500 C) of electricity will be required to produce 0.1 mol of Cl₂ gas.

Now, Q = I × t

∴ 0.2 × 96500 = 2 × t

∴ t = 9650 seconds = 160.8 minutes