The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 12.27 grams of sodium acetate, NaCH3C00 (82.00 g/mol), in 174.4 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula K, °C/m) KfCC/m) Water H20 0.512 1.86 Ethanol CH;CH,OH 1.22 1.99 Chloroform CHCI3 3.67 Benzene CH6 2.53 5.12 Diethyl ether CH3CH;0CH,CH; 2.02 The molality of the solution is | m. The freezing point of the solution is °C.
The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 12.27 grams of sodium acetate, NaCH3C00 (82.00 g/mol), in 174.4 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula K, °C/m) KfCC/m) Water H20 0.512 1.86 Ethanol CH;CH,OH 1.22 1.99 Chloroform CHCI3 3.67 Benzene CH6 2.53 5.12 Diethyl ether CH3CH;0CH,CH; 2.02 The molality of the solution is | m. The freezing point of the solution is °C.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:**Text Transcription and Explanation**
The freezing point of water is 0.00°C at 1 atmosphere.
A student dissolves 12.27 grams of sodium acetate, NaCH₃COO (82.00 g/mol), in 174.4 grams of water. Use the table of boiling and freezing point constants to answer the questions below.
**Table of Solvents and Constants**
| Solvent | Formula | \( K_b \) (°C/m) | \( K_f \) (°C/m) |
|----------------|------------------|------------------|------------------|
| Water | H₂O | 0.512 | 1.86 |
| Ethanol | CH₃CH₂OH | 1.22 | 1.99 |
| Chloroform | CHCl₃ | 3.67 | — |
| Benzene | C₆H₆ | 2.53 | 5.12 |
| Diethyl ether | CH₃CH₂OCH₂CH₃ | 2.02 | — |
**Questions:**
1. The molality of the solution is __________ m.
2. The freezing point of the solution is __________ °C.
**Explanation of the Table:**
The table provides the boiling point elevation constants (\( K_b \)) and freezing point depression constants (\( K_f \)) for various solvents.
- **Water (H₂O):** has a \( K_b \) of 0.512°C/m and a \( K_f \) of 1.86°C/m.
- **Ethanol (CH₃CH₂OH):** has a \( K_b \) of 1.22°C/m and a \( K_f \) of 1.99°C/m.
- **Chloroform (CHCl₃):** only provides a \( K_b \) of 3.67°C/m.
- **Benzene (C₆H₆):** has a \( K_b \) of 2.53°C/m and a \( K_f \) of 5.12°C/m.
- **Diethyl ether (CH₃CH₂OCH₂CH₃):** only provides a \( K_b \) of 2.02°C/m.
These constants
Expert Solution

Step 1
Given
Mass of Sodium acetate = 12.27 gram
Molar mass of sodium acetate = 82 gram/mole
Mass of water = 174.4 gram
= 0.1744 Kg ( 1 gram = 10-3 Kg )
Freezing point of water = 0 ℃
Molality of solution = ?
Freezing point of solution = ?
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