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JAMB Chemistry 2025 Objective — Question 7

Question 7 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2025 Objective paper, with the correct answer and a full explanation.

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For the reversible reaction: N₂ + 3H₂ ⇌ 2NH₃, ΔH = −ve, which change shifts the equilibrium to the right?

  • A. Increasing the temperature
  • B. Removing ammonia as it formsCorrect
  • C. Increasing the volume at constant pressure
  • D. Adding an inert gas at constant volume

Explanation

Removing a product (NH₃) reduces its concentration, shifting equilibrium right to produce more. Increasing temperature shifts exothermic reactions left; increasing volume shifts to side with more moles of gas (left).

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