Question

if one of the industrial process used for manufacturing of sodium hydroxide a gas X is formed as by product. The gas X reacts with lime water to give a compound Y which is used as bleaching agent in chemical industry.Identify X,Y giving the chemical reaction involved.

Answer 1

X is CO2
Y is CaCO3
CO2+CaO------>CaCO3

Hope it would be helpful

Answer 2

X-Cl2
Y-CaOCl2
1.)NaCl+H2o-->NaOH+H2+Cl2
2.)Cl2+CA(OH)2-->CaOCl2+H2O