Results #10 — Bromophenol Blue
Names (group of 2) __________________________________
Lab section: M T W Th F
Work in groups of 2. Get permission ahead of time to work in groups
of 3.
Please show all work.
1) Make three plots for Trial 1, and use these to determine the order of reaction
with respect to Bp2+. You may use absorbance in place of concentration. If your
first data point doesn’t look right, delete it before plotting. For Trial 2, just
make the plot that was most linear for Trial 1. Attach the four plots to your
results.
2) What are the values of k, m, and n for this reaction? Round n to the nearest
integer. Include units where necessary. Show your work.
k
m
n
3) What is the overall rate law for this reaction (include numbers)? The overall
order?
Overall rate law __________________
Overall order _________
4) Compare the molarity of Bromophenol Blue and NaOH in each
experiment/trial:
a. Why is one so much greater than the other?
b. Why is such a small concentration of Bp2- used?
(Note: The answer is not the same for both of these questions.)
