Which of the following reactions would be expected to have the highest entropy change?

JAMB Chemistry 2023 56 views

Which of the following reactions would be expected to have the highest entropy change?

  1. Solid → Liquid
  2. Liquid → Gas ✓
  3. Gas → Liquid
  4. Gas → Solid

Explanation

Liquid to gas has the highest entropy change. Gas particles spread far apart. They move freely and randomly. This creates maximum disorder.

Solid to liquid increases entropy less. Gas to liquid or solid decreases entropy. Entropy measures disorder or randomness.

Remember: Gases have high entropy. Solids have low entropy. Liquids are in between.

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