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13. Draw (by hand, not calculator or computer) a titration curve for lactic acid (pK=3.86), either on graph paper or a hand-made facsimile. For the individual points, please use points corresponding to the following equivalents of OH(where 1.0 equivalent is sufficient to neutralize all HA to A-): 0,0.05,0.2,0.3, 0.4,0.5,0.6,0.7,0.8,0.9,0.95. Hint: for each addition, use the HH equation to calculate the pH corresponding to that aliquot of base added. Label the x - and y-axes as shown in class and in the book