Question

Balance the following equation:

${\mathrm{N}}_2+{\mathrm{H}}_2\to {\mathrm{NH}}_3$

Answer 1

• Balanced equation: The chemical equation in which the number of atoms of each element on the reactant side as well as the product side is equal is known as a balanced equation.

Balancing the following chemical equation:

${\mathrm{N}}_2+{\mathrm{H}}_2\to {\mathrm{NH}}_3$

Steps to Balance the chemical equation:

• Count the number of atoms of each element on either side. Now first balance the compound with the maximum number of atoms

A number of atoms of each element on the reactant side:

N=2 H=2

A number of atoms of each element on the product side:

N=1 H=3

• As the number of nitrogen and hydrogen is not equal on both the reactant and product sides so we will first balance nitrogen thus multiplying ammonia (NH₃) by 2 on the right-hand side. The reaction becomes:

${\mathrm{N}}_2+{\mathrm{H}}_2\to 2{\mathrm{NH}}_3$

• Now we will balance hydrogen by multiplying left-hand side hydrogen by 3. The following equation is obtained:

$\underset{\mathrm{nitrogen}}{{\mathrm{N}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{hydrogen}}{3{\mathrm{H}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{ammonia}}{2{\mathrm{NH}}_3\left(\mathrm{g}\right)}$

thus in the above equation, the no. of nitrogen and hydrogen atoms are equal on both sides. Hence it is a balanced equation.