Question

choose the correct coefficients for the following reaction: _____ h_{2}+_____ n_{2} yields 2nh_{3}.
2;3
3;2
3;1
1;2

Explanation:

Step1: Balance nitrogen atoms

On the right - hand side, there are \(2\) nitrogen atoms in \(2NH_3\). On the left - hand side, there are \(2\) nitrogen atoms in \(N_2\). So the coefficient of \(N_2\) is \(1\).

Step2: Balance hydrogen atoms

On the right - hand side, there are \(2\times3 = 6\) hydrogen atoms in \(2NH_3\). On the left - hand side, if the coefficient of \(H_2\) is \(3\), then there are \(3\times2=6\) hydrogen atoms.

Answer:

\(3;1\)