The relative lowering of vapour pressure in case of very dilute solutions is directly proportional to:
Correct answer: C. Mole fraction
- A. Molality
- B. Molarity
- C. Mole fraction
- D. All of these
Explanation
In case of dilute solution M=m∝ mole fraction.
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About Solutions and Colloids
Solutions are described using molarity, molality, normality, mole fraction, percentage concentration and parts per million. Coverage also includes vapour-pressure lowering, boiling-point elevation, freezing-point depression and osmotic pressure, then distinguishes true solutions, colloids and suspensions by particle size, stability, light scattering and settling.
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