If 0.15 ~m aqueous solution of KCI freezes at -0.51^ C , calculate van't Hoff factor of KCI (cryoscopic constant of water is 1.86 ~K ~kg ~mol ⁻¹ )

Step-by-step solution

array ll & T _ f = T _ f ^0- T _ f =0- (-0.51^ C )=0.51 ^ C =0.51 ~K & T _ f = iK _ f m & i = T K _ f m = 0.51 ~K 1.86 ~K ~kg ~mol ⁻¹ 0.15 ~mol ~kg ⁻¹ =1.82 array