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MHT CET202613 April 2026Evening ShiftChemistrySolutionsActual

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 )

Options

  1. A0.1 M
  2. B0.2 M
  3. C0.25 M
  4. D0.4 M

Correct 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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