ICSE Class 10 Chemistry Question 26 of 53

Study of Compounds — Hydrogen Chloride — Question 23

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23
Question

Question 1(2013)

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.

Answer

(i) Sulphur dioxide gas

(ii) Chlorine gas
MnO2+4HClΔMnCl2+2H2O+Cl2\text{MnO}_2 + 4\text{HCl} \xrightarrow{\Delta} \text{MnCl}_2 + 2\text{H}_2\text{O} + \text{Cl}_2