Answer: Directly proportional to pressure.
- A Inversely proportional to temperature
- B Directly proportional to pressure
- C Independent of temperature
- D Inversely proportional to pressure
Correct answer: B. Directly proportional to pressure
Explanation: Henry's law: C = KH × P. More pressure means more gas dissolves.
Adding a non-volatile solute lowers the solvent's vapour pressure at every temperature, which is the root cause behind all four colligative properties: it shifts the freezing point down and the boiling point up.
Concept context
Learn how substances dissolve and form mixtures. Covers concentration terms, colligative properties (boiling point elevation, freezing point depression, osmotic pressure), and ideal vs non-ideal solution behaviour.