Question

Which of the following reaction mixtures would produce the greatest amount of product, assuming all went to completion?Each involves the following reaction:
$N_{2\left(g\right)}+3H_{2\left(g\right)}\to 2N{H}_{3\left(g\right)}$

• A. $2mol{N}_2$ and $4mol{H}_2$
• B. $1mol{N}_2$ and $5mol{H}_2$
• C. $4mol{N}_2$ and $2mol{H}_2$
• D. $5mol{N}_2$ and $1mol{H}_2$

Answer 1

The correct option is B $1mol{N}_2$ and $5mol{H}_2$

The given reaction : $N_{2\left(g\right)}+3H_2\left(g\right)=2N{H}_{3\left(g\right)}$

Here, Ratio of $N_2$ and $H_2$ is $1:3$.

$A.$ $2mol$ $N_2$ and $4mol$ $H_2$, Ratio $N_2:H_2=2:4=1:2$

$B.$ $1mol$ $N_2$ and $5mol$ $H_2$, Ratio $N_2:H_2=1:5$

$C.$ $4mol$ $N_2$ and $2mol$ $H_2$, Ratio $N_2:H_2=4:2=2:1$

$D.$ $5mol$ $N_2$ and $1mol$ $H_2$, Ratio $N_2:H_2=5:1$

The reaction mixture (B) gives greatest amount of product.