Chemistry - Liquid Solution Question with Solution | TestHub

Using the formula for osmotic pressure $\pi =\frac{W}{MV}RT$

Rearranging for molar mass $M$:

$M=\frac{WRT}{\pi V}$

Substituting the given values:

$M=\frac{0.8\times 0.082\times 300}{0.2\times 0.3}$

$M=\frac{0.8}{0.2}\times \frac{300}{0.3}\times 0.082$

$M=4\times 1000\times 0.082$

$M=328$ g/mol

Answer: $328$ g/mol