Answer:
The following data point should be kept when making your calibration.
1.21E-05 M
1.60E-05 M
8.09E-06 M
4.04 E-06 M
Step-by-step explanation:
From the graph it is obvious that the reading for the concentration 2.02E-06 M does not fall on the straight line. So this point should not be taken to construct the calibration plot.
Find attached of the graph.