Question

During electrolysis of molten sodium chloride, the time required to produce 0.1 mole of chlorine gas using a current of 3A is ___________.

Options

• 55 minutes

• 107.2 minutes

• 220 minutes

• 330 minutes

Answer 1

During electrolysis of molten sodium chloride, the time required to produce 0.1 mole of chlorine gas using a current of 3A is 107.2 minutes.

Explanation:

m = ZIt ...(mass of 1 mole of Cl gas = 71)

t = `"m"/"ZI"` ....(∴ mass of 0.1 mole of Cl₂ gas = 7.1 g mol⁻¹)

= `(7.1)/(71/(2 xx 96500) xx 3)` \[\ce{(2Cl^- -> Cl2 + 2e^-)}\]

= `(2 xx 96500 xx 7.1)/(71 xx 3)`

= 6433.33 sec

= 107.2 min