Home › UP Board Class 12 › Solutions › Osmotic pressure of a dilute solution is express…
Osmotic pressure of a dilute solution is expressed by van't Hoff's equation as:
A$\pi = CRT$
B$\pi V = nR$
C$\pi = nRT$
D$\pi = RT/C$
Answer & Solution
Correct answer: A. $\pi = CRT$
For a dilute solution behaving ideally, $\pi = C R T$, where $C$ is the molar concentration of solute, $R$ the gas constant and $T$ the absolute temperature. Equivalently $\pi V = n R T$, structurally identical to the ideal-gas equation with osmotic pressure playing the role of $p$.
Related questions
The mass of NaOH (M = 40 g/mol) required to prepare 500 mL of a 0.20 M NaOH solution isWhich of these solutions will boil at the highest temperature at 1 atm?The molality of a 1 M aqueous NaCl solution (density = 1.04 g/mL, NaCl M = 58.5 g/mol) is Osmotic pressure π of a dilute solution obeys π = C R T. Here C representsVan't Hoff factor i > 1 for a solute indicatesA negative deviation from Raoult law is expected whenIf a solute dimerises in solution, its observed molar mass compared with the calculated vaWhich of the following is NOT a colligative property?