102 Experiment 12 Determination of Molar Mass by the Freezing Point Depression Method 2. The equation AT; = Kçm is only strictly applicable to very. solutions. 3. The f.p. lowering (AT;) only depends on the molality and is independent of the nature of the solute. This is known as a property. 4. A solid is melted then allowed to cool and the temperature of the liquid is recorded every 2 minutes. According to the plot below, the most probable f.p. of the solid is . °C. 75.5 75.0 74.5 74.0 73.5 73.0 72.5 72.0 71.5 71.0 70.5 4 6. 8. 10 12 14 16 18 22 24 26 Time (min) Temperature (°C) 20 (Figure created by David Samo.) р. 102

102 Experiment 12 Determination of Molar Mass by the Freezing Point Depression Method 2. The equation AT; = Kçm is only strictly applicable to very. solutions. 3. The f.p. lowering (AT;) only depends on the molality and is independent of the nature of the solute. This is known as a property. 4. A solid is melted then allowed to cool and the temperature of the liquid is recorded every 2 minutes. According to the plot below, the most probable f.p. of the solid is . °C. 75.5 75.0 74.5 74.0 73.5 73.0 72.5 72.0 71.5 71.0 70.5 4 6. 8. 10 12 14 16 18 22 24 26 Time (min) Temperature (°C) 20 (Figure created by David Samo.) р. 102

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

Section: Chapter Questions

Problem 76AP

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