WAEC Chemistry 2019 Objective — Question 25
Question 25 of 50 from the West African Examinations Council (WAEC) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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If the value of ΔH is positive for a reaction, it means that the reaction is
- A. exothermic
- B. endothermicCorrect
- C. spontaneous
- D. slow
Explanation
A positive ΔH means the products have more energy than the reactants, i.e. the reaction absorbs heat — an endothermic reaction.
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