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Q.

The osmotic pressures of 0.010 M solutions of KI and of sucrose (C12H22O11) are 0.432 atm and 0.24 atm respectively. The van't Hoff factor for KI is :

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a

1.80

b

0.80

c

1.2

d

1.0

answer is A.

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Detailed Solution

i= Number of particles in KI solution  Number of particles in sucrose solution ⇒π (KI solution) π (sucrose solution) =0.432atm0.24atm=1.80

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The osmotic pressures of 0.010 M solutions of KI and of sucrose (C12H22O11) are 0.432 atm and 0.24 atm respectively. The van't Hoff factor for KI is :