Question

The number of moles of chlorine required to oxidise 1 mol of sulfur dioxide to sulfur trioxide in presence of water is ____________.

Options

• 1

• 1.5

• 2

• 3

Answer 1

The number of moles of chlorine required to oxidise 1 mol of sulfur dioxide to sulfur trioxide in presence of water is 1.

Explanation:

\[\ce{\underset{(1 mol)}{SO2} + 2H2O + \underset{(1 mol)}{Cl2} -> H2SO4 + 2HCl}\]