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The reaction quotient (Q) for the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g) is given by Q = [NH₃]² / [N₂][H₂]³. The reaction will proceed from right to left if:

1. Q = 0
2. Q < Kc
3. Q > Kc
4. Q = Kc

Correct answer: Q > Kc

Solution

The reaction proceeds from right to left when Q > Kc, as this indicates the system has more products than equilibrium requires, and the reaction shifts to form more reactants.

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