- Two (2) graphs must be completed for the Post Lab report
- Data Sheet 2: Class Average
0.25M 0.1M 0.05M 0.02M 0.01M
V, mL of KI titrant: 6.42 4.45 4.09 3.71 3.86
- No Lab quiz Mon 7/19
Prelab: a couple of questions have come up for the prelab.
Q1) you need to create a graph of log[Zn][IO3]^2 on the y-axis and sqrt equation on the x-axis in order to find Ksp of Zn(IO3)2. Plot the four points, the points should decrease from left to right, and draw a line through the y-axis. At the point where your line crosses the y-axis will be the number you will take the antilog of. Ex: if your line crosses at 4.65 put that number as the negative exponent of 10^(-4.65), the result is your Ksp.
Q2) Ion products are close to the Ksp value when they are very dilute. Check the graph to be sure the axis are correct. The graph leads you to a correct answer.
