Question

Write the balanced chemical equation for the reaction of Sulphuric acid with

(ⅰ ) Potassium bicarbonate

(ⅱ) Sodium sulphate

(ⅱⅰ) Iron (ll) sulphide

Answer 1

The reaction of sulphuric acid

(ⅰ ) Potassium bicarbonate on reaction with Sulphuric acid gives Potassium sulphate, Carbon and water.

$2{\mathrm{KHCO}}_3\left(\mathrm{s}\right)$ + ${\mathrm{H}}_2{\mathrm{SO}}_4\left(l\right)$ $\to$ ${\mathrm{K}}_2{\mathrm{SO}}_4\left(\mathrm{s}\right)$ $+$ $2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$ $+$ $2{\mathrm{CO}}_2\left(\mathrm{g}\right)$

(Potassium bicarbonate) (Sulphuric acid) (Potassium sulpahte) (Water) (Carbon dioxide)

(ⅱ) There will not be a chemical reaction between the two. Sodium sulphate is a salt of Sulphuric acid,. Acid does not react with its own salt as both have the same anion.

(ⅱⅰ) Iron sulphide on reaction with Sulphuric acid forms Iron sulphate and Hydrogen sulphide gas.

$\mathrm{FeS}\left(\mathrm{s}\right)$ + ${\mathrm{H}}_2{\mathrm{SO}}_4\left(l\right)$ $\to$ ${\mathrm{FeSO}}_4\left(\mathrm{s}\right)$ + ${\mathrm{H}}_2\mathrm{S}\left(\mathrm{g}\right)$

( Iron sulphide) (Sulphuric acid) (Ferrous sulpahte) (Hydrogen sulfide)

So reaction between Sulphuric acid with Potassium bicarbonate forms Potassium sulphate, Carbon dioxide and water, whereas there is no reaction with Sodium bisulphate, and reaction with Iron sulphide gives Ferrous sulphate and hydrogen sulphide.