Why can bleaching powder give a chlorine-like smell when kept in moist air?
Answer and explanation
Correct answer: Because it can react with moisture and carbon dioxide to release chlorine
Bleaching powder contains hypochlorite and chloride species and is not completely stable in moist air. Moisture and carbon dioxide can promote decomposition or acidification of its chlorine-containing components, allowing a small amount of chlorine or related active chlorine to escape and produce the characteristic smell. It does not become sodium chloride, absorb oxygen as the main process, or freeze water.
Frequently asked questions
What is the correct answer to this question?
Because it can react with moisture and carbon dioxide to release chlorine
Why is this the correct answer?
Bleaching powder contains hypochlorite and chloride species and is not completely stable in moist air. Moisture and carbon dioxide can promote decomposition or acidification of its chlorine-containing components, allowing a small amount of chlorine or related active chlorine to escape and produce the characteristic smell. It does not become sodium chloride, absorb oxygen as the main process, or freeze water.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
