A graph of osmotic pressure (pi) vs molarity | vedclass

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(D) The osmotic pressure $(\pi)$ is given by the formula: $\pi = iCRT$,where $i$ is the van't Hoff factor,$C$ is the molarity $(M)$,$R$ is the univers

Vedclass · Accepted Answer

None of these

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(D) The osmotic pressure $(\pi)$ is given by the formula: $\pi = iCRT$,where $i$ is the van't Hoff factor,$C$ is the molarity $(M)$,$R$ is the universal gas constant,and $T$ is the temperature.Comparing this with the equation of a straight line $y = mx + c$ (where $y = \pi$ and $x = M$):$\pi = (iRT) 	imes M$Here,the slope $(m)$ is equal to $iRT$.Since $NaCl$ is an electrolyte,its van't Hoff factor $i > 1$.Therefore,the slope of the line represents $iRT$,which is not explicitly listed as an option (as $iRT 
eq RT$ for $NaCl$).Thus,the correct option is $D$.

$A$ graph of osmotic pressure $(\pi)$ vs molarity $(M)$ of an aqueous solution of $NaCl$ at room temperature is given below. The slope of the line represents :-

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