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Niacin, a B vitamin, can act as an acid and as a base.
(a) Write chemical equations showing the action of niacin as an acid in water. Symbolize niacin as HNc.
(b) Write chemical equations showing the action of niacin as a base in water.
(c) A 0.020-M aqueous solution of niacin has a pH = 3.26. Calculate the Ka of niacin.
(d) Calculate the Kb of niacin.
(e) Write the chemical equation that accompanies the Kb expression for niacin.
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