The value of $K_b$ is given by $mRT_b^2 / 1000 \, X$. In this relation,$X$ is :-

The molal elevation constant is the ratio of the elevation of boiling point to the........

What is the molal elevation constant if one gram mole of a nonvolatile solute is dissolved in $1 \ kg$ of ethyl acetate? $(\Delta T_{b} = x \ K)$

What is the elevation in boiling point for a one molal solution of a solute in a solvent called?

The boiling point of $0.2 \ m$ aqueous urea solution is $....... \ ^oC$. ($K_b$ of water $= 0.52 \ K \ kg \ mol^{-1}$)

The boiling point of toluene is $110.7\,^oC$ and its molal elevation constant is $3.32\, K\, kg\, mol^{-1}$. The enthalpy of vaporization of liquid toluene is ............ $kJ\, mol^{-1}$.