The osmotic pressure of equimolar solutions o | vedclass

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Question

(A) Osmotic pressure $(\pi)$ is a colligative property given by the formula $\pi = iCRT$,where $i$ is the van't Hoff factor,$C$ is the molar concentra

Vedclass · Accepted Answer

$BaCl_2 > NaCl > Glucose$

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(A) Osmotic pressure $(\pi)$ is a colligative property given by the formula $\pi = iCRT$,where $i$ is the van't Hoff factor,$C$ is the molar concentration,$R$ is the gas constant,and $T$ is the temperature.For equimolar solutions,$\pi$ is directly proportional to the van't Hoff factor $(i)$.For $BaCl_2$,it dissociates as $BaCl_2 \rightarrow Ba^{2+} + 2Cl^-$,so $i = 3$.For $NaCl$,it dissociates as $NaCl \rightarrow Na^+ + Cl^-$,so $i = 2$.For glucose,it is a non-electrolyte,so $i = 1$.Since the order of $i$ is $3 > 2 > 1$,the order of osmotic pressure is $BaCl_2 > NaCl > Glucose$.

The osmotic pressure of equimolar solutions of $BaCl_2, NaCl$ and glucose at the same temperature follows the order:

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