1.
A liquid freezes at 7C7^\circ\text{C} and boils at 77C77^\circ\text{C}. If values of KfK_f and KbK_b of this liquid are 5.6K⋅kg/mol5.6\,\text{K·kg/mol} and 2.5K⋅kg/mol2.5\,\text{K·kg/mol} respectively, then the ratio of molar latent heat of fusion (in kJ/mol) to molar latent heat of vaporisation (in kJ/mol) for the liquid is -