A dilute solution contains m mol of solute A in 1 kg of a solvent with molal elevation constant `K_(b)`. The solute dimerises in solution as `2A hArr A_(2)`. Show that equilibrium constant for the dimer formation is
`K =(K_(b)(K_(b)m-DeltaT))/((2DeltaT_(b)-K_(b)m)^(2))` where `DeltaT_(b)` is the elevation of the boiling point for the given solution. Assume molarity = molarity