You collect 44.8 L of ammonia in excess hydrogen (N=14amu, H=1amu). For the Haber process, N2+3H2â2NH3, what volume of nitrogen is consumed at STP? a. 14.9 L

b. 29.9 L

c. 44.8L

d. 22.4 L

d

Explanation:

Firstly, we need to see the theoretical mole ratio between nitrogen and ammonia from the balanced chemical equation. This is 1 to 2. One mole of nitrogen yielded two moles of ammonia.

At STP, one mole of a gas occupies a volume of 22.4, hence we need to know the volume occupied by a volume of 44.8L of ammonia. This is equal to 44.8/2 = 2 moles

Now we have seen the actual number of moles of ammonia yielded. Since this is the same as the theoretical, it means that only one mole of nitrogen was also used up.

Since it is one mole, the volume at STP is thus 22.4L