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Chemical equilibrium — Question 19

QCAA 2025, Paper 1 · 1 mark

Q19 · 2025 · Paper 1Unclassified1 mark

QUESTIONS 19–20 Questions 19–20 refer to the reversible chemical reaction and enthalpy level diagram shown.

Chemistry question figure

QUESTION 19

Which statement is true for the forward reaction?

(A) Energy is a product.

(B) The reaction is endothermic.

(C) Enthalpy change (ΔH) is positive.

(D) Activation energy (Ea) is less than enthalpy change (ΔH).

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