Formula for the molar mass of a solute from freezing point depression or boiling point elevation

1. A.
   $M_2 = \frac{1000 \times K_f \times W_1}{\Delta T_f \times W_2}$
2. B.
   $M_2 = \frac{1000 \times K_f \times W_2}{\Delta T_f \times W_1}$
3. C.
   $M_2 = \frac{1000 \times \Delta T_f \times W_2}{K_f \times W_1}$
4. D.
   $M_2 = \frac{1000 \times \Delta T_f \times W_1}{K_f \times W_2}$

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1. A.
   $M_2 = \frac{1000\times\Delta T_b\times W_2}{K_b\times W_1}$
2. B.
   $M_2 = \frac{1000\times K_b\times W_1}{\Delta T_b\times W_2}$
3. C.
   $M_2 = \frac{1000\times\Delta T_b\times W_1}{K_b\times W_2}$
4. D.
   $M_2 = \frac{1000\times K_b\times W_2}{\Delta T_b\times W_1}$

Tap an option to check your answer.