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In which of the following is the entropy change positive?

Chemistry
JAMB 2010

In which of the following is the entropy change positive?

  • A. Thermal dissociation of ammonium chloride
  • B. Reaction between an acid and a base
  • C. Addition of concentrated acid to water
  • D. Dissolution of sodium metal in water
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Correct Answer: Option A
Explanation

Thermal dissociation of ammonium chloride is an endothermic reaction as heat is absorbed for a positive entropy, with more products than reactants.

There is an explanation video available below.

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Explanation Video

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