Given the reaction at equilibrium:
N2 (g) + 3H2 (g) - - >2NH3 (g) + 91.8 kJ
What occurs when the concentration of H2 (g) is increased?
(1) The rate of the forward reaction increases and the concentration of N2 (g) decreases.
(2) The rate of the forward reaction decreases and the concentration of N2 (g) increases.
(3) The rate of the forward reaction and the concentration of N2 (g) both increase.
(4) The rate of the forward reaction and the concentration of N2 (g) both decrease.
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