Name the reactants and products in the following skeletal equation and balance them.
(ii) $N_{2} + H_{2} \to N H_{3}$

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Solution

The skeletal equation is: $N_{2} + H_{2} \to N H_{3}$
Reactants are nitrogen and hydrogen, the product is ammonia

Count the number of atoms of each element.

To equalize $N$ , multiply ${N H}_{3}$ by $2$

$N_{2} + H_{2} \to 2 N H_{3}$

To equalize $H$ , multiply $H_{2}$ by $3$ .

$N_{2} + 3 H_{2} \to 2 N H_{3}$
Hence, the equation is balanced.

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