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Chemistry · Oct / Nov 2024 · Paper 12 · Question 18

5070Reversible reactions and equilibrium

Samples of nitrogen and hydrogen are reacted and allowed to reach equilibrium. The equation is shown. N2 + 3H2 ⇌ 2NH3 ΔH = –92 kJ / mol The temperature is increased and a new equilibrium is established. Which statement about the new equilibrium is correct?

  1. AThe amount of product increases.
  2. BThe amount of product decreases.
  3. CThe rate of the forward reaction is greater than the rate of the reverse reaction.
  4. DThe rate of the forward reaction is less than the rate of the reverse reaction.

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Correct answer: B. The amount of product decreases.

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