Question

Write the equation for the laboratory preparation of Ethyne from Calcium carbide.

Answer 1

Definition of hydrolysis:

The breaking of a bond and the addition of the hydrogen cation and the hydroxide anion of water are all part of the chemical breakdown process.

Laboratory preparation of Ethyne from Calcium carbide :

Hydrolysis of Calcium carbide$\left({\mathrm{CaC}}_2\right)$

When Calcium carbide is added to water, Acetylene$\left({\mathrm{C}}_2{\mathrm{H}}_2\right)$ and Calcium hydroxide are formed.

The chemical equation is

$\underset{\mathrm{Calcium}\mathrm{carbide}}{{\mathrm{CaC}}_2\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Ethyne}}{{\mathrm{C}}_2{\mathrm{H}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{Calcium}\mathrm{hydroxide}}{\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\left(\mathrm{s}\right)}$.

Therefore, hydrolysis of Calcium carbide produces Calcium hydroxide$\left(\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\right)$ and Acetylene or Ethyne are the products.