alleryOsmotic pressure π of a dilute solution obeys π = C R T. Here C represents
AMole fraction of solute
BMolality of the solution
CMass fraction of solute
DMolarity of the solution
Answer & Solution
Correct answer: D. Molarity of the solution
1. The van't Hoff osmotic pressure formula is π = C R T.
2. Here C is the molar concentration (molarity) of the solute in mol/L.
3. R is the gas constant, T is temperature in K.
4. Osmotic pressure is a colligative property; C accounts for particle count per unit volume.
_Source: syllabus Chemistry, Unit 1 "Solutions", §1.6_
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