O-LevelChemistryRates of Reaction5070/11 · May/June 2025 · Q161 Mark

Which row is correct for a chemical reaction in which ∆H is negative?

Aenergy of bonds broken greater than energy of bonds formed | endothermic

Benergy of bonds broken less than energy of bonds formed | exothermic

Cenergy of bonds broken greater than energy of bonds formed | exothermic

Denergy of bonds broken less than energy of bonds formed | endothermic

✓ Correct answer

B: energy of bonds broken less than energy of bonds formed | exothermic

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2025 Paper 1 Variant 1, question 16.

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