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Question

A living cell contains a solution which is isotonic with 0.3 M sugar solution. What osmotic pressure develops when the cell is placed in a 0.1 M KCl solution at body temperature?
  1. 5.0 atm 
  2. 2.54 atm
  3. 4.92 atm
  4. 2.46 atm


Solution

The correct option is B 2.54 atm
Osmotic pressure for a solution is given by
π=icRT
π=(i1C1i2C2)RT
=2.54 atm.

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