Question

Making use one of substances chosen from those given below:

Dilute sulphuric acid

Zinc

Lead

Sodium carbonate

sodium sulphite

calcium carbonate

Give the equations for the reactions by which you could obtain:

hydrogen

Answer 1

1. By choosing zinc from the given list and reacting it with sulphuric acid$\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$, hydrogen$\left({\mathrm{H}}_2\right)$ is obtained.
2. $$\begin{gathered} \mathrm{Zn}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{l}\right)\to {\mathrm{ZnSO}}_4\left(\mathrm{l}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right) \\ \left(\mathrm{Zinc}\right)\left(\mathrm{Hydrogen}\right) \end{gathered}$$