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JAMB Chemistry 2021 Question 10

Question 10

Energy Changes

During the dissolution of sodium nitrate in water, the ΔH is positive, this means that

  1. A.the reaction is complete
  2. B.the reaction is endothermic
  3. C.the reaction is exothermic
  4. D.the reaction is catalyzed
Show the answer and explanation

Answer: B (the reaction is endothermic)

Explanation

A positive ΔH means heat is absorbed from the surroundings, i.e. the process is endothermic.