Question
An aqueous solution has an osmotic pressure of 4.92 atm at 300 K. Calculate the molarity of the solution. (R = 0.082 L atm mol^ -1 K^ -1 )
MHT CET
Chemistry
Solutions
2026
MHT CET 2026 (13 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 0.1 M
- B. 0.2 M
- C. 0.25 M
- D. 0.4 M
Answer
B. 0.2 M
Step-by-step solution
Using the formula for osmotic pressure: = CRT Where is the osmotic pressure, C is the molarity, R is the gas constant, and T is the temperature. Substituting the given values: 4.92 = C 0.082 300 4.92 = C 24.6 C = 4.92 24.6 = 0.2 M Answer: 0.2 M
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