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How does the solubility of a solid in a liquid change with temperature if the dissolution process is exothermic?

Options

  1. ASolubility increases with temperature.
  2. BSolubility decreases with temperature.
  3. CSolubility remains constant with temperature.
  4. DSolubility follows a random pattern with temperature.

Correct answer

B. Solubility decreases with temperature.

Step-by-step solution

The paragraph states that if the dissolution process is exothermic (Δsol H < 0), solubility should decrease with a rise in temperature, and this trend is observed experimentally.

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