Two solutions of KNO3 and CH3COOH are prepared separately. Molarity of both is 0.1 M and osmotic pressures are P1 and P2 respectively. The correct relationship between the osmotic pressures is:

Question

Two solutions of KNO3 and CH3COOH are prepared separately. Molarity of both is 0.1 M and osmotic pressures are P1 and P2 respectively. The correct relationship between the osmotic pressures is: (A) P2 > P1 (B) P1= P2 (C) P1 > P2 (D) (P1/P1+P2)=(P2/P1+P2)

Tardigrade Admin · Accepted Answer

KNO3 is is 100% ionised while CH3COOH is weak electrolyte ∴ iKNO3 >iCH3 COOH ∴ P1 > P2

Q. Two solutions of $K N O_{3}$ and $C H_{3} COO H$ are prepared separately. Molarity of both is 0.1 M and osmotic pressures are $P_{1}$ and $P_{2}$ respectively. The correct relationship between the osmotic pressures is:

$P_{2} > P_{1}$

$P_{1} = P_{2}$

$P_{1} > P_{2}$

$\frac{P _{1}}{P _{1} + P _{2}} = \frac{P _{2}}{P _{1} + P _{2}}$

$K N O_{3}$ is is 100% ionised while $C H_{3} COO H$ is weak electrolyte
$∴ i_{K N O_{3}} > i_{C H_{3} COO H}$
$∴ P_{1} > P_{2}$

Q. Two solutions of KNO3​ and CH3​COOH are prepared separately. Molarity of both is 0.1 M and osmotic pressures are P1​ and P2​ respectively. The correct relationship between the osmotic pressures is:

P2​>P1​

P1​=P2​

P1​>P2​

P1​+P2​P1​​=P1​+P2​P2​​