Identify the gas evolved when :
(i) Potassium sulphite is treated with dilute hydrochloric acid.
(ii) Concentrated hydrochloric acid is made to react with manganese dioxide.
(i) Sulphur dioxide gas
(ii) Chlorine gasMnO2+4HCl→ΔMnCl2+2H2O+Cl2\text{MnO}_2 + 4\text{HCl} \xrightarrow{\Delta} \text{MnCl}_2 + 2\text{H}_2\text{O} + \text{Cl}_2MnO2+4HClΔMnCl2+2H2O+Cl2 ↑
