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

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

• Option 1)

$P2 > P1$

• Option 2)

$P1 = P2$

• Option 3)

$P1 > P2$

• Option 4)

$\frac{P_{1}}{P_{1}+P_{2}}=\frac{P_{2}}{P_{1}+P_{2}}$

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As we learned

Application of Vant Hoff factor -

$(a)\: \: \: \left ( \frac{\Delta P}{P^{0}} \right )_{obs}= X_{solute}\times i$

$(b)\: \: \: \left ( \Delta T_{b} \right )_{obs}= K_{b}\times m\times i$

$(c)\: \: \: \left ( \Delta T_{f} \right )_{obs}= K_{f}\times m\times i$

$(d)\: \: \: \left ( \pi \right )_{obs}= C\times R\times T\times i$

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KNO3 dissociates completely while CH3COOH dissociates to a small extent. Hence, P1 > P2 .

Option 1)

$P2 > P1$

Option 2)

$P1 = P2$

Option 3)

$P1 > P2$

Option 4)

$\frac{P_{1}}{P_{1}+P_{2}}=\frac{P_{2}}{P_{1}+P_{2}}$

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