A solution contains non-volatile solute of molecular mass $M_{2}$. Which of the following can be use

Question

A solution contains non-volatile solute of molecular mass $M_{2}$. Which of the following can be used to\ calculate the molecular mass of solute in terms of osmotic pressure?\( $m_{2}=$ mass of solute, $V=$ volume of solution, $\pi=$ osmotic pressure)\

Professor PC Thomas Classes · Answer

(b) : For dilute solution, $\pi=\frac{n}{V} R T$\ $\Rightarrow \pi V=\frac{m_{2}}{M_{2}} R T \Rightarrow M_{2}=\frac{m_{2} R T}{\pi V}$\