Answer to Question #198504 in General Chemistry for lea

Question

Nitrogen and hydrogen gas react to form ammonia according to the reaction: N2(g)+3H2(g)→2NH3(g)

What is the limiting reactant?

Express your answer as a chemical formula.

Which reactant is in excess?

Express your answer as a chemical formula

Answer 1

N2(g)+3H2(g)→2NH3(g)

so n(N₂)=1mol

n (H₂)=1mol

And we find amount compounds after the reaction:

n(N₂)=1/coefficient=1/1=1mol

n(H₂)=1/coefficient=1/3=0.333mol

So limit is H₂ , so n (limit)=0.333mol

And excess is the N₂ ,

so n(excess)=n(N₂)-n(limit)=

=1-0.333=0.667mol