The purpose should include a majority of the topics and techniques covered in the experiment. The procedure section should cite the lab manual and include any changes made to the procedure during lab work.

The data section should include a table with the following a) experimental values for cell potentials for each of the 10 cells, b) literature values for the cell potentials for each of the 10 cells, and c) the percent error for the potentials of the 10 cells. A second table should be made of the cell you studied and should include the following: a) the temperatures being studied, b) the cell potential at each temperature used, c) DG for each cell, d) K for each temperature and e) DH and DS for the cell.

The calculation section should include a graph of DG vs Temperature. All graphing guidelines apply. Example calculations of the following should also be included: percent error, DG,  and K. DG and K can be determined from the following equations:

DG= - RT ln K
and
E^o= RT/nF ln K

The values for DH and DS are determined from the graph where the slope of the graph is –DS and the y-intercept of the graph is DH. Make sure that the units are correct in all of your calculations and answers.

The conclusion should be several paragraphs with the following: A discussion of the values for DG, K, DH, and DS.  Be sure to include values for both your cell at various temperatures and all the class data of all the cells. Also a discussion of the discrepancies between the experimental cell potentials and the literature cell potentials is needed. The relationship between temperature and cell potential should be discussed as well as all possible errors.

Answer the following questions:

1. What is a Watt? How is it related to the potential of a battery?