1. Write the balanced chemical equation:
N₂(g) + 3H₂(g) ⇌ 2NH₃(g)
2. Write the Keq expression:
Keq = ([NH₃]²) / ([N₂] * [H₂]³)
3. Substitute the equilibrium concentrations:
Keq = (3² ) / (2 * 1³)
4. Calculate Keq:
Keq = 9 / 2 = 4.5
Therefore, the Keq for the reaction N₂ + 3H₂ ⇌ 2NH₃ under these conditions is 4.5.