Question

If P₁, P₂ and P₃ are the vapour pressure of equimolar solutions of glucose , NaCl and urea then ......

1 point

(A) P₁ = P₂ = P₃

(B) P₁ = P₃ < P₂

(C) P₁= P₃ > P₂

(D) P₁ > P₂ > P₃


​

Answer 1

Answer:

The osmotic pressure is inversely proportional to the molecular weight.

The increasing order of molecular weights is urea < glucose < sucrose.

Hence, the decreasing order of osmotic pressure is P

2

>P

1

>P

3

.

Hence, the correct option is C