A 3.782−g sample of a mixture of cyclohexane (C6H12) and naphthalene (C10H8) is dissolved in 57.30 g of benzene (C6H6). The freezing point of the solution is 1.90°C. Calculate the mass percent of the mixture. (See the table for constants.) Solvent NormalBoiling Point Kb(°C/m) NormalFreezingPoint Kf (°C/m) Water 100 0.52 0.0 1.86 Benzene 80.1 2.53 5.5 5.12 Ethanol 78.4 1.22 −117.3 1.99 Acetic Acid 117.9 2.93 16.6 3.90 Cyclohexane 80.7 2.79 6.6 20.0 Naphthalene 80.6 6.9 208 5.95
A 3.782−g sample of a mixture of cyclohexane (C6H12) and naphthalene (C10H8) is dissolved in 57.30 g of benzene (C6H6). The freezing point of the solution is 1.90°C. Calculate the mass percent of the mixture. (See the table for constants.) Solvent NormalBoiling Point Kb(°C/m) NormalFreezingPoint Kf (°C/m) Water 100 0.52 0.0 1.86 Benzene 80.1 2.53 5.5 5.12 Ethanol 78.4 1.22 −117.3 1.99 Acetic Acid 117.9 2.93 16.6 3.90 Cyclohexane 80.7 2.79 6.6 20.0 Naphthalene 80.6 6.9 208 5.95
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter13: The Chemistry Of Solutes And Solutions
Section: Chapter Questions
Problem 77QRT
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A 3.782−g sample of a mixture of cyclohexane (C6H12) and naphthalene (C10H8) is dissolved in 57.30 g of benzene (C6H6). The freezing point of the solution is 1.90°C. Calculate the mass percent of the mixture. (See the table for constants.)
| Solvent | Normal Boiling Point |
Kb(°C/m) | Normal Freezing Point |
Kf (°C/m) |
| Water | 100 | 0.52 | 0.0 | 1.86 |
| Benzene | 80.1 | 2.53 | 5.5 | 5.12 |
| Ethanol | 78.4 | 1.22 | −117.3 | 1.99 |
| Acetic Acid | 117.9 | 2.93 | 16.6 | 3.90 |
| Cyclohexane | 80.7 | 2.79 | 6.6 | 20.0 |
| Naphthalene | 80.6 | 6.9 | 208 | 5.95 |
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