Question

47. Write the molecular equation for the following word equation.
$\mathrm{Calcium}+\mathrm{Nitrogen}\to \mathrm{Calcium}\mathrm{nitride}$

Answer 1

Step 1:- Representation of elements

Calcium is denoted by Ca and Nitrogen is denoted by N_2.

Step 2:- Write the molecular equation

When calcium reacts with nitrogen, it produces calcium nitride (Ca₃N₂).

The molecular equation is:

$\underset{\mathrm{Calcium}}{\mathrm{Ca}\left(\mathrm{s}\right)}+\underset{\mathrm{Nitrogen}}{{\mathrm{N}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Calcium}\mathrm{nitride}}{{\mathrm{Ca}}_3{\mathrm{N}}_2\left(\mathrm{s}\right)}$

After balancing the above reaction, the balanced chemical equation can be written as:

$\underset{\mathbf{Calcium}}{\mathbf{3}\mathbf{Ca}\mathbf{\left(}\mathbf{s}\mathbf{\right)}}\mathbf{}\mathbf{}\mathbf{+}\underset{\mathbf{Nitrogen}}{\mathbf{}{\mathbf{N}}_{\mathbf{2}}\mathbf{\left(}\mathbf{g}\mathbf{\right)}}\mathbf{}\mathbf{\to }\underset{\mathbf{Calcium}\mathbf{}\mathbf{nitride}}{{\mathbf{Ca}}_{\mathbf{3}}{\mathbf{N}}_{\mathbf{2}}\mathbf{\left(}\mathbf{s}\mathbf{\right)}}$