Define molal depression constant. How is it related to enthalpy of fusion ?

Explanation

The depression in freezing point when one mole of the solute is dissolved in 1000 g of the solvent is called molal depression constant. It is expressed as `K_f` and is related to enthalpy of fusion, `Delta H` as:
`K_f =(RT_(b)^(@2 )M )/(Delta F_(fus ")xx 1000)`