The Van't Hoff factor of the compound $K_3[Fe(CN)_6]$ is

Which of the following solutions in water possesses the lowest vapour pressure?

If sodium sulfate $(Na_2SO_4)$ undergoes complete dissociation into its constituent ions in an aqueous solution,what will be the depression in freezing point $(\Delta T_f)$ when $0.01 \ mol$ of sodium sulfate is dissolved in $1 \ kg$ of water (in $K$)? (Given: $K_f = 1.86 \ K \ kg \ mol^{-1}$)

The molal elevation constant of water is $0.51 \ K \ kg \ mol^{-1}$. The boiling point of a $0.1 \ m$ aqueous $NaCl$ solution is approximately ......... $^oC$.

Of the following $0.10 \ m$ aqueous solutions,which one will exhibit the largest freezing point depression?

Which of the following will have the highest boiling point at $1 \ atm$ pressure?