Determine the molal concentration of a sugar solution in water that has a freezing point of -2.1 $\circ$ C. K_f = 1.86 $\circ$ C/m for water. A)1.13 m B)(-1.13 m) C)3.91 m D)(-3.91 m) E)0.113 m

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Quizplus · Accepted Answer

The freezing point depression formula is ΔTf = iKf * m, where ΔTf is the change in freezing point, i is the van't Hoff factor (which is 1 for sugar since it doesn't ionize in solution), Kf is the cryoscopic constant for water (1.86°C/m), and m is the molality of the solution. Given ΔTf = 2.1°C and Kf = 1.86°C/m, solving for m gives m = ΔTf / Kf = 2.1°C / 1.86°C/m = 1.13 m.

Determine the Molal Concentration of a Sugar Solution in Water ∘\circ∘

Determine the Molal Concentration of a Sugar Solution in Water $\circ$