The concentration in $g/L$ of a solution of cane sugar $(M = 342)$ which is isotonic with a solution containing $6 \ g$ of urea $(M = 60)$ per litre is :-

At a certain temperature,the value of the slope of the plot of osmotic pressure $(\pi)$ against concentration $(C \text{ in } mol \ L^{-1})$ of a certain polymer solution is $291 \ R.$ The temperature at which osmotic pressure is measured is: $(R \text{ is the gas constant})$

$200 \, cm^3$ of an aqueous solution of a protein contains $1.26 \, g$ of the protein. The osmotic pressure of such a solution at $300 \, K$ is found to be $2.57 \times 10^{-3} \, bar$. Calculate the molar mass of the protein.

Which will have minimum osmotic pressure?

$A$ $5.25\%$ solution of a substance is isotonic with a $1.5\%$ solution of urea (molar mass $= 60\ g\ mol^{-1}$) in the same solvent. If the densities of both the solutions are assumed to be equal to $1.0\ g\ cm^{-3},$ the molar mass of the substance will be .............. $g\ mol^{-1}$.

What is osmotic pressure? Explain and derive its equation.