If humid air is polluted by chlorine discharged, the air can be restored by sprinkling

Chemistry

WAEC 2021

A. solid MnO\(_{2}\)
B. acidified KMnO\(_{4}\)
C. acidified FeSO\(_{4}\)
D. saturated NaCl(aq)

WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995

WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709

Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts

Correct Answer: Option B

Explanation

Chlorine is a toxic gas and when it pollutes the air, it can be neutralized by using acidified KMnO4. The reaction between chlorine and acidified KMnO4 results in the formation of chloride ions, manganese(II) ions, and water, which are harmless. This is why acidified KMnO4 is used to restore air polluted by chlorine discharge.

Previous Next

Go back to Chem classroom

Report an Error Ask A Question Download App