Colligative properties depend on the number of solute particles present in the solution. Osmotic pressure of 30% ionized 0.1M K2SO4 solution at 270c is

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3.94 atm

2.92 atm

3.21 atm

2.43 atm

answer is A.

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Detailed Solution

K2SO4⇌2K++SO42-; n=3 i=1-α+nα; i=1+2α; i=1+0.6=1.6(given α=0.3); π=iCRT; π=1.6×0.1×0.0821×300=3.94 atm

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