Difference between revisions of "Solution Calorimetry"
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The following report will consist of a collection of graphs and handwritten calculations. | The following report will consist of a collection of graphs and handwritten calculations. | ||
::: KOH or NaOH (s) --> NaOH (aq) (1) | ::: KOH or NaOH (s) --> NaOH (aq) (1) | ||
| − | ::: KOH or NaOH (s) + HCl (aq) --> NaCl (aq) + | + | ::: KOH or NaOH (s) + HCl (aq) --> NaCl (aq) + H<sub>2</sub>O (l) (2) |
| − | ::: KOH or NaOH (aq) + HCl (aq)--> NaCl (aq) + | + | ::: KOH or NaOH (aq) + HCl (aq)--> NaCl (aq) + H<sub>2</sub>O (l) (3) |
===Experimental data=== | ===Experimental data=== | ||
| Line 12: | Line 12: | ||
===Theoretical (hand written)=== | ===Theoretical (hand written)=== | ||
| − | : 1) Use the | + | : 1) Use the ∆H<sub>f</sub> to calculate theoretical values of ΔH<sub>1</sub>, ΔH<sub>2</sub>, and ΔH<sub>3</sub>. |
| − | : 2) Using the concept of Hess’ Law, use the theoretical values to show that | + | : 2) Using the concept of Hess’ Law, use the theoretical values to show that ΔH<sub>1</sub>, ΔH<sub>2</sub>, and ΔH<sub>3</sub>. |
===Conclusion=== | ===Conclusion=== | ||
: 1) Comment of the quality of the experimental data. | : 1) Comment of the quality of the experimental data. | ||
: 2) Indicate whether your experimental data “follows” Hess’ Law. | : 2) Indicate whether your experimental data “follows” Hess’ Law. | ||
| − | : 3) Suggest sources of error in the experimental setup. | + | : 3) Suggest sources of error in the experimental setup and potential ways to improve. |
Revision as of 13:33, 16 October 2020
Calorimetry Lab...report (Chem 312)
The following report will consist of a collection of graphs and handwritten calculations.
- KOH or NaOH (s) --> NaOH (aq) (1)
- KOH or NaOH (s) + HCl (aq) --> NaCl (aq) + H2O (l) (2)
- KOH or NaOH (aq) + HCl (aq)--> NaCl (aq) + H2O (l) (3)
Experimental data
- 1) Plot out (with axes labels in Igor) time vs temp data for the three reactions on a single graph.
- 2) As will be discussed in lab, annotate a single data set (on a different graph using a layout) to show how Tf and Ti were determined, and hence ΔT.
- 3) Show calculations to (hand written) to determine ΔH1, ΔH2, and ΔH3.
Theoretical (hand written)
- 1) Use the ∆Hf to calculate theoretical values of ΔH1, ΔH2, and ΔH3.
- 2) Using the concept of Hess’ Law, use the theoretical values to show that ΔH1, ΔH2, and ΔH3.
Conclusion
- 1) Comment of the quality of the experimental data.
- 2) Indicate whether your experimental data “follows” Hess’ Law.
- 3) Suggest sources of error in the experimental setup and potential ways to improve.