Question

Name:
(a) Substance that causes corrosion of concentrated hydrochloric acid to Cl₂.
(b) Colourless gas that can be used a bleaching agent

Answer 1

Answers for the given points are - manganese dioxide and sulphur dioxide.

•Manganese dioxide reacts with concentrated hydrochloric acid to form the products namely, manganese chloride, chlorine gas and water.

•Some other compounds too react with concentrated hydrochloric acid to give chlorine gas.

•These compounds are namely, sodium hypochlorite, potassium permanganate etc.

•Sulphur dioxide is the colourless gas, which is bleaching in nature.

•Bleaching agents are oxidizing agents in nature, generally used to remove or lighten the colours.

•Sulphur dioxide acts as bleaching agent by reducing the compound.

•It ends up releasing oxygen molecule.