The osmotic pressure of dilute solution is given by the formula:
Correct answer: C. π = CRT
- A. π = nRT/V
- B. π = PRT
- C. π = CRT
- D. π = PV=nRT
Explanation
The correct formula for the osmotic pressure of a dilute solution is π = CRT, where:C is the molar concentration of the solute.R is the universal gas constant.T is the absolute temperature.Option A presents the ideal gas law, which is not applicable to osmotic pressure. Option B lacks the concentration term necessary for calculating osmotic pressure. Option D is another form of the ideal gas law, irrelevant to the context of osmotic pressure.
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About Colligative Properties
Colligative properties depend on the number of dissolved particles rather than their chemical identity. The topic covers relative lowering of vapour pressure, elevation of boiling point, depression of freezing point and osmotic pressure, including electrolyte dissociation, the van’t Hoff factor and molar-mass calculations.
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