Question

How is carbon dioxide prepared in the laboratory?

Answer 1

Carbon dioxide is prepared in the laboratory when metal carbonates or metal hydrogen carbonates are treated with dilute acids.

• One such example is given here in which-
• Sodium bicarbonate(Baking soda) is treated with dilute Sulphuric acid to give Sodium sulfate, Water, and Carbon dioxide.
• The equation of reaction is-

$\underset{\mathrm{Sodium}\mathrm{bicarbonate}}{2{\mathrm{NaHCO}}_3\left(\mathrm{s}\right)}+\underset{\mathrm{dil}.\mathrm{Sulphuric}\mathrm{acid}}{{\mathrm{H}}_2{\mathrm{SO}}_4(\mathrm{dil}.)}\to \underset{\mathrm{Sodium}\mathrm{sulphate}}{{\mathrm{Na}}_2{\mathrm{SO}}_4\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}+\underset{\mathrm{Carbon}\mathrm{dioxide}}{2{\mathrm{CO}}_2\left(\mathrm{g}\right)}$