Solution Calorimetry

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 T_f and T_i were determined, and hence ΔT.

3) Show calculations to (hand written) to determine ΔH₁, ΔH₂, and ΔH₃.

Theoretical (hand written)

1) Use the ∆H_f 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.