Q10 of 48 Page 2

A gas ‘X’ reacts with lime water and forms a compound ‘Y’ which is used as a bleaching agent in chemical industry. Identify ‘X’ and ‘Y’. Give the chemical equation of the reactions involved.(CBSE 2011)

Chlorine gas reacts with lime water to form bleaching powder which is used as a bleaching agent in chemical industry.

Hence, the species X is Chlorine gas and the species Y is Bleaching powder with formula -CaOCl2.


The chemical equation of the reactions involved is : -


Ca(OH)2 + Cl2→ CaOCl2 + H2O

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