Calculate the osmotic pressure of 0.01 M aqueous solution of non electrolyte at 300 K .

$$ \left[\mathrm{R}=0.0821 \mathrm{~atm} \mathrm{dm}^3 \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right] $$

Which from following units of concentrations of solutions is temperature independent?

Calculate cryoscopic constant of solvent if 2 g solute having molar mass $80 \mathrm{~g} \mathrm{~mol}^{-1}$ dissolved in 75 g solvent decreases its freezing point by 0.4 K .

The osmotic pressure of equimolar concentration of $\mathrm{CaCl}_2$ and urea at same temperature are 0.6 atm and 0.25 atm respectively. Calculate van't Hoff factor for $\mathrm{CaCl}_2$.