Calculate T_f of 0.15 m solution of nonvolatile solute [ K _ f =1 5 ~K ~kg ~mol ⁻¹ ]

Step-by-step solution

The depression in freezing point T_f is determined using the colligative property formula T_f = i K_f m , where i is the van't Hoff factor, K_f = 1.5 K kg mol ⁻¹ is the cryoscopic constant, and m = 0.15 m is the molality. For a nonvolatile, non-electrolyte solute, i = 1 . Substituting the values: T_f = 1 1.5 0.15 = 0.225 K The result corresponds to option C .