What is the freezing point of a sugar solution prepared by dissolving 375.00 g of sucrose (342.3 g/mol)in 1500.0 g of water (K_f of water = 1.86 °C)?

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Quizplus · Accepted Answer

The freezing point depression can be calculated using the formula ΔTf = i * Kf * m, where i is the van't Hoff factor (1 for sucrose), Kf is the cryoscopic constant (1.86 °C kg/mol for water), and m is the molality of the solution. The molality is calculated as moles of solute (375 g / 342.3 g/mol) divided by kilograms of solvent (1.5 kg). The calculated freezing point depression is approximately 1.36 °C, so the new freezing point is 0 °C - 1.36 °C = -1.36 °C.

What Is the Freezing Point of a Sugar Solution Prepared