The value of osmotic pressure of a $0.2 \ M$ aqueous solution at $293 \ K$ is ........... $atm$.

Which one of the following pairs of solutions can we expect to be isotonic at the same temperature?

The osmotic pressure of a dilute solution is given by

$A$ $5.25\%$ 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 .............. $g\ mol^{-1}$.

Which of the following pairs of solutions can be isotonic at the same temperature?

The $pH$ of a $0.2 \ M$ aqueous solution of a dibasic acid $(H_2A)$ is $1.699$. Its osmotic pressure at $T \ K$ is ......... $RT$.