How many moles of hydrogen will be needed to react with 2 moles of nitrogen in the reaction #N_2 + H_2 -> NH_3#?

1 Answer
anor277
Feb 28, 2016

The balanced equation for dinitrogen reduction is:
#N_2(g) + 3H_2(g) rarr 2NH_3(g)#.

#2# #"moles"# #N_2# requires #6# moles #H_2#.

Explanation:

The equation above represents probably the most important inorganic reaction on the planet in that it allows the formation of ammonia and nitrates for nitrogenous fertilizer.

Your question specified 2 moles of nitrogen. I would be quite justified in assuming that the questioner meant 2 moles of dinitrogen gas, i.e. the equivalent of #4# moles of #"NITROGEN"# atoms.

Thus, if #2# moles of dinitrogen gas are specified, #6# moles of dihydrogen gas are required.

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