| 1. | Safety |
| 2. |
Objectives/Overview |
| 3. |
Procedures |
| 4. | Observations |
|
5. |
Equipment |
| 6. | View
Techniques |
| 7. | |
| 8. | Calculations/Set-ups |
| 9. | Conclusions |
| 10. | Grading Scale |
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11. |
Sample Report Forms |
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11. |
Review Prelab Questions |
| 12. | Review Postlab Questions |
Experiment
7
Enthalpy
of Solution
PRELAB QUESTIONS
References:
Ebbing, "General Chemistry", 5th ed., pp. 228-255 (Thermochemistry)
Learning
Center:
SSM Lesson 7; WEN Module 11 (problems 3-10); answers to pre and post-lab
questions.
SHOW SET-UP FOR ALL PROBLEMS
1. A student performs a calibration experiment to determine the heat capacity of the calorimeter. The student mixes 25.0 mL of warm water at 41.2 °C and 35.0 mL of cool water at 15.1°C. The final temperature of the mixture is 19.8°C. Assume that the specific heat of water is 4.184 J/g °C and that the density of water is 1.00 g/mL. Calculate the heat capacity of the calorimeter.
2. A sample of MgSO4 is dissolved in 50.0 mL of distilled water in a calorimeter with a heat capacity of 35.3 J/g °C. The temperature of the solution increased from 21.3°C to 23.7°C. Calculate the heat released (or absorbed) during this dissolution process.
3. An endothermic reaction involving the dissolution of 1.367 g of compound X in water absorbed 34.6 kJ of heat energy. Calculate the molar enthalpy of solution of compound X. (The molar mass of compound X is 146.32 g/mol)
