Given the equation representing a system at equilibrium:
N2 (g) + 3H2 (g) 2NH3 (g) + energyWhich changes occur when the temperature of this system is decreased?
(1) The concentration of H2 (g) increases and the concentration of N2 (g) increases.
(2) The concentration of H2 (g) decreases and the concentration of N2 (g) increases.
(3) The concentration of H2 (g) decreases and the concentration of NH3 (g) decreases.
(4) The concentration of H2 (g) decreases and the concentration of NH3 (g) increases.
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