What is the expected freezing point depression (°C) for a solution that contains 0.2 mol of magnesium sulfate dissolved in 1.0 kg of water? (Kf of water is -1.86 °C / m and normal freezing point is 0.0°C)
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Expert's answer
2020-06-29T07:48:03-0400
MgSO4(s) --> Mg2+(aq) + SO42-(aq).
1 mol of MgSO4 produces 2 moles of particles when dissolved in water. Molality is equal to the moles of particles per 1 kg of the solvent. Therefore,
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