First slide
Abnormal Colligative properties ,Vant-Hoff's factor
Question

Colligative properties depend on the number of solute particles present in the solution. Osmotic pressure of 90% ionized 0.1M  BaCl2 solution at 270c is

Moderate
Solution

BaCl2 Ba+2+2Cl-; n=3 i=1-α+;  i=1+2α; i=1+1.8=2.8(given α=0.9); π=iCRT; π=2.8×0.1×0.0821×300=6.89 atm 

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