Question:

Formula of Osmotic pressure is:

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The formula for osmotic pressure is derived from the ideal gas law and applies when a solvent passes through a semipermeable membrane due to a concentration gradient.
  • \( \pi = \frac{nRT}{V} \)
  • \( P = \frac{KT}{V} \)
  • \( P = \frac{RT}{M} \)
  • \( \pi = \frac{PV}{T} \)
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The Correct Option is A

Solution and Explanation

Step 1: Formula for osmotic pressure.
Osmotic pressure (\( \pi \)) is the pressure required to stop osmosis. The formula is derived from the ideal gas law and given by: \[ \pi = \frac{nRT}{V} \] where:
- \( n \) is the number of moles of solute,
- \( R \) is the gas constant,
- \( T \) is the temperature in Kelvin,
- \( V \) is the volume of the solution.

Step 2: Conclusion.
The correct formula for osmotic pressure is \( \pi = \frac{nRT}{V} \), which corresponds to option (1).

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