Question

For each of the following chemical compounds write the chemical equation involved in its preparation and mention its one use.

(i) Calcium oxychloride

Answer 1

Chemical formula:

Chemical formulas provide information on elements and their respective count present in any compound. It also helps to predict the compound or elements combined to form that given compound.

(i) The chemical formula of Calcium oxychloride is ${\mathrm{CaOCl}}_2$ and its common name is bleaching powder.

Preparation of calcium oxychloride:

Calcium hydroxide and Chlorine react to form Calcium oxychloride and Water. The chemical reaction equation for the preparation of Calcium oxychloride is given below.

$$\begin{gathered} \mathrm{Ca}{\left(\mathrm{OH}\right)}_2\left(\mathrm{aq}\right)+{\mathrm{Cl}}_2\left(\mathrm{g}\right)\to {\mathrm{CaOCl}}_2\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right) \\ \mathrm{Calcium}\mathrm{Chlorine}\mathrm{Calcium}\mathrm{Water} \\ \mathrm{hydroxide}\mathrm{oxychloride} \end{gathered}$$

It is prepared from slaked lime, that is, Calcium hydroxide $\left[\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\right]$.

One use of calcium oxychloride:

Calcium oxychloride is used for the sterilization of drinking water as it functions as a disinfectant by killing microorganisms.