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Chemistry · Oct / Nov 2025 · Paper 11 · Question 16

5070Reversible reactions and equilibrium

The equation shows the reversible reaction between nitrogen and hydrogen to form ammonia. N2 + 3H2 ⇌ 2NH3 The forward reaction is exothermic. Which statement is correct when the temperature is increased?

  1. AThe activation energy increases.
  2. BThe equilibrium shifts to form more ammonia.
  3. CThe rate of the forward reaction decreases.
  4. DThe rate at which ammonia decomposes increases.

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Correct answer: D. The rate at which ammonia decomposes increases.

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