Question

In the reaction of nitrogen gas, N2, with hydrogen gas, H2, to form ammonia gas, NH3, how many moles of hydrogen are needed to react with two moles of nitrogen? N2 + 3H2 → 2NH3 Select one: A. 5.710 moles B. 4 moles C. 2 moles D. 8 moles E. 6 moles

Answer 1

Answer : The correct option is, (E) 6 moles.

Explanation : Given,

Moles of nitrogen = 2 moles

The given balanced chemical reaction is:

$N_2+3H_2\rightarrow 2NH_3$

From the balanced chemical reaction we conclude that,

As, 1 mole of nitrogen gas react with 3 moles of hydrogen gas

So, 2 mole of nitrogen gas react with $2\times 3=6$ moles of hydrogen gas

Therefore, the number of moles of hydrogen gas needed to react with 2 moles of nitrogen gas is, 6 moles.