Question

Kc=55 for the reaction N2(g) + 3H2(g)⇌ 2H3(g) at a certain temperature. Suppose it was found that an equilibrium mixture of these gases contained 0.02996 M of Nh3 and 0.017864 M of N2. What is the concentration (in M) of H2 in the mixture?

Answer 1

K c =
55 =
0.000898 = 0.9825[H 2 ] 3
[H 2 ] 3 = = 0.00091
[H 2 ] = 0.097
At equilibrium [H 2 ] = 0.097 mol/L