How many moles of product can we make from adding in 3.4 moles of H2? N2 + 3H2 --> 2NH3

Question

a	3.4 mol
b	5.1 mol
c	1.2 mol
d	2.3 mol

Answer 1

Looking at the balance equation N₂ + 3H2 ==> 2NH₃, we see that it takes THREE MOLES of H₂ to produce TWO moles of product (NH₃). Thus, the mole ratio is 3:2. We now use this mole ratio, to do the required calculations:

3.4 moles H₂ x 2 moles NH₃ / 3 moles H₂ = 2.3 moles NH₃ can be made (Answer d).