Question

\[\ce{MnO2 + HCl ->[\Delta] A_{(g)}}\]

\[\ce{A_{(g)} + F2_{(excess)} -> B_{(g)}}\]

The gases A and B are respectively ____________.

Options

• Cl₂, ClF

• Cl₂, CIF₃

• O₂, OF₂

• O₂, O₂F₂

Answer 1

\[\ce{MnO2 + HCl ->[\Delta] A_{(g)}}\]

\[\ce{A_{(g)} + F2_{(excess)} -> B_{(g)}}\]

The gases A and B are respectively Cl₂, CIF₃.

Explanation:

\[\ce{\underset{\underset{dioxide}{Manganese}}{MnO2} + \underset{\underset{acid}{Hydrochloric}}{4HCl} ->[\Delta] \underset{\underset{dichloride}{Manganese}}{MnCl2} + \underset{\underset{(A)}{Chlorine}}{Cl2} + \underset{Water}{2H2O}}\]

\[\ce{\underset{\underset{(A)}{Chlorine}}{Cl2} + \underset{\underset{(excess)}{Fluorine}}{3F2} -> \underset{\underset{[colourless gas (B)]}{Chlorine trifluoride}}{2ClF3}}\]

In the given series of reactions, the gases A and B are Cl₂ and CIF₃ respectively.