Calculate the pK at 25 degrees C of the following reaction using the data in the table. Use R = 8.314 J/mol/K. 1A +1B + 2C AHf (kJ/mol) A 8.65 B 3.22 C 1.04 D -1.02 E 16.36 Answer: -2.97 × (8.73) 1D + 5E so(J/mol/K) 13.50 13.55 0.97 8.37 15.55
Calculate the pK at 25 degrees C of the following reaction using the data in the table. Use R = 8.314 J/mol/K. 1A +1B + 2C AHf (kJ/mol) A 8.65 B 3.22 C 1.04 D -1.02 E 16.36 Answer: -2.97 × (8.73) 1D + 5E so(J/mol/K) 13.50 13.55 0.97 8.37 15.55
Chemistry
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![**Calculating the pK at 25°C for a Chemical Reaction**
To calculate the pK of a reaction at 25 degrees Celsius, we use the provided thermodynamic data. The gas constant \( R \) is given as 8.314 J/mol/K.
### Reaction:
\[ 1\text{A} + 1\text{B} + 2\text{C} \rightarrow 1\text{D} + 5\text{E} \]
### Thermodynamic Data:
| Compound | \( \Delta H_f^0 \) (kJ/mol) | \( S^0 \) (J/mol/K) |
|----------|----------------------------|---------------------|
| A | 8.65 | 13.50 |
| B | 3.22 | 13.55 |
| C | 1.04 | 0.97 |
| D | -1.02 | 8.37 |
| E | 16.36 | 15.55 |
### Answer:
The initial calculation gave an incorrect pK value of -2.97. The corrected value is (8.73).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6ae95cc5-a0cd-43b0-8331-9678c9dacca0%2Fc15bf435-5a33-4161-822c-d25b76cc1eff%2Fm72kk7_processed.png&w=3840&q=75)
Transcribed Image Text:**Calculating the pK at 25°C for a Chemical Reaction**
To calculate the pK of a reaction at 25 degrees Celsius, we use the provided thermodynamic data. The gas constant \( R \) is given as 8.314 J/mol/K.
### Reaction:
\[ 1\text{A} + 1\text{B} + 2\text{C} \rightarrow 1\text{D} + 5\text{E} \]
### Thermodynamic Data:
| Compound | \( \Delta H_f^0 \) (kJ/mol) | \( S^0 \) (J/mol/K) |
|----------|----------------------------|---------------------|
| A | 8.65 | 13.50 |
| B | 3.22 | 13.55 |
| C | 1.04 | 0.97 |
| D | -1.02 | 8.37 |
| E | 16.36 | 15.55 |
### Answer:
The initial calculation gave an incorrect pK value of -2.97. The corrected value is (8.73).
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