1.00 ~g of a non-electrolyte solute (molar mass .250 ~g ~mol ⁻¹ ) was dissolved in 51.2 ~g of benzene. If the freezing point depression constant, K _ f of benzene is 5.12 ~K ~kg ~mol ⁻¹ , the freezing point of benzene will be lowered by

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Correct answer: C. 0.4 ~K

T _ f = K _ f m =5.12 1 250 1000 51.2 =0.4 ~K

1.00 ~g of a non-electrolyte solute (molar mass .250 ~g ~mol ⁻¹ ) was dissolved in 51.2 ~g of benzene. If the freezing point depression constant, K _ f of benzene is 5.12 ~K ~kg ~mol ⁻¹ , the freezing point of benzene will be lowered by

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