S P Singh Solutions for Chapter: Sulphuric Acid, Exercise 1: Intext Questions

Sulphuric acid is manufactured by the Contact process. (d) Why ${\mathrm{H}}_2{\mathrm{SO}}_4$ is not obtained by directly reacting ${\mathrm{SO}}_3$ with water?

Sulphuric acid is manufactured by the Contact process. (e) Name the chemical used to dissolve ${\mathrm{SO}}_3$ and also name the product formed. Give all the main reactions of this process.

Sulphuric acid is manufactured by the Contact process. (e) Name a gas that can oxidise sulphur.

Why the impurity of arsenic oxide must be removed before passing the mixture of ${\mathrm{SO}}_2$ and air through the catalytic chamber? 

(a) Name the catalyst which helps in the conversion of sulphur dioxide to sulphur trioxide in step C.

(b) In the Contact process for the manufacture of sulphuric acid, sulphur trioxide is not converted to sulphuric acid by reacting it with water. Instead, a two steps procedure is used. Write the equations for the two steps involved in $\mathrm{D}$.

(c) What type of substance will liberate sulphur dioxide from sodium sulphite in step $\mathrm{E}$?

(d) Write the equation for the reaction by which sulphur dioxide is converted to sodium sulphite in step $\mathrm{F}$.