Question

Making use one of substances chosen from those given below:

Dilute sulphuric acid

Sodium carbonate

Zinc

Sodium sulphite

Lead

Calcium carbonate

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

carbon dioxide

Answer 1

1. By choosing sodium carbonate $\left({\mathrm{Na}}_2{\mathrm{CO}}_3\right)$from the given list and reacting it with dilute sulphuric acid$\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$, carbon dioxide $\left({\mathrm{CO}}_2\right)$is obtained.
2. $$\begin{gathered} {\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{l}\right)\to {\mathrm{Na}}_2{\mathrm{SO}}_4\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right) \\ (\mathrm{Sodium}(\mathrm{Carbon} \\ \mathrm{carbonate})\mathrm{dioxide}) \end{gathered}$$