For N2(g) + 3H2(g) ⇌ 2NH3(g) + heat
KP = KC(RT)2
KP = KC(RT)
KP = KC(RT)−2
KP = KC(RT)−1
For the reaction, △n = 2 – (1 + 3) = −2, hence the correct relation would be KP = KC(RT)−2
For the reaction
N2(g)+3H2(g)→2NH3(g)