WAEC Chemistry 2018 Objective — Question 7
Question 7 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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A reaction is endothermic if the
- A. reaction vessel feels cool during the reactionCorrect
- B. enthalpy change is negative
- C. bond forming energy exceeds bond breaking energy
- D. heat of formation of reactants exceeds heat of formation of products
Explanation
In an endothermic reaction, heat is absorbed from the surroundings, so the reaction vessel feels cold to the touch.
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