Question

$N_2\left(g\right)+3H_2\left(g\right)\to 2{NH}_3\left(g\right)$
What volume of nitrogen will be needed to fully react with $15L$ of hydrogen? Assume STP conditions.

• A. $15L$
• B. $10L$
• C. $5L$
• D. $7.5L$

Answer 1

The correct option is C $5L$

Given, $V_{H_2}=15L$

$N_2+H_2\to 2N{H}_3$

$1L$ of Nitrogen reacts with $3L$ of Hydrogen

So, to react with $15L$ of Hydrogen,

$V_{\text{Nitogen needed}}=\frac{15}{3}=5L$