The solubility curve shows the variation of solute concentration with
A. volume
B. temperature
C. vapour density
D. pressure
A solubility curve shows how the solubility (concentration of a solute) changes with temperature.
Therefore, it shows the variation of solute concentration with temperature.
✅ Correct answer: B. temperature
Exam tip:
Solubility curves are usually plotted as solubility (g per 100 g of water) against temperature (°C).
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