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JAMB Chemistry 2001 Question 31

Question 31

Energy Changes

When ΔH is negative, a reaction is said to be

  1. A.ionic
  2. B.reversible
  3. C.exothermic
  4. D.endothermic
Show the answer and explanation

Answer: C (exothermic)

Explanation

A negative ΔH means the products have less energy than the reactants: heat is given out, so the reaction is exothermic.