The molecular weight of NaCl determined by os | vedclass

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(C) We know that $NaCl$ is a strong electrolyte that dissociates completely in water as $NaCl \rightarrow Na^+ + Cl^-$.The van't Hoff factor $(i)$ for

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Lower than theoretical value

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(C) We know that $NaCl$ is a strong electrolyte that dissociates completely in water as $NaCl ightarrow Na^+ + Cl^-$.The van't Hoff factor $(i)$ for $NaCl$ is $2$.The relationship between the van't Hoff factor and molar mass is given by $i = \frac{	ext{theoretical molar mass}}{	ext{observed molar mass}}$.Since $i = 2$,the observed (experimental) molar mass is $\frac{1}{2}$ of the theoretical molar mass.Therefore,the molecular weight determined by the osmotic pressure method will be lower than the theoretical value.

The molecular weight of $NaCl$ determined by osmotic pressure method will be

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