Measure the height of the blue band and the total column height. When 5 mL of 0.015 M CuSO 4 solution is added to a column, a blue band measuring 1.0 cm forms. When the heights are measured, you estimate the values to the nearest 0.1 cm. Definitions of absolute and relative uncertainty are given in the section at the start of your lab manual manual called Computing Uncertainty in Laboratory Data and Results . Monitor the pH of the effluent drops as you add NaOH to the column.
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Be sure to record an accurate mass for the sample in each labelled vial. Tape your vials together and label them with your name and lab section.