Rate Constant:

Now that you have determined the order with respect to [S2O82-] and [I-], the rate constant, k, can be readily calculated from

    (eqn 14)

Calculate the rate constant for runs 1 - 5. At this point is would be best to summarize your data in a Table. For example:

Table II: Summary of Rates and Rate Constant
Run Rate [I-] after
mixing		 [S2O82-] after
mixing		 [I-]m [S2O82-]n Rate
Constant
1            
2            
3            
4            
5            

You do not have to calculate the standard deviation for the rate constant.