During the electrolysis of a molten sodium chloride (NaCl) sample, 4.6 g of sodium was deposited at the cathode. What volume of chlorine gas was released at the anode at STP?
- 4.48 L
- 2.24 L
- 1.12 L
- 5.6 L
📝 Detailed explanation
2NaCl → 2Na + Cl₂.n(Na) = 4.6 / 23 = 0.2 mol.
According to stoichiometry, n(Cl₂) = n(Na) / 2 = 0.1 mol.
Volume Cl₂ = 0.1 * 22.4 = 2.24 L.