Solved: An unknown amount of acid can often be determined by adding an excess of base
Chapter 4, Problem 4.55(choose chapter or problem)
An unknown amount of acid can often be determined by adding an excess of base and then back-titrating the excess. A 0.3471-g sample of a mixture of oxalic acid, which has two ionizable protons, and benzoic acid, which has one, is treated with 100.0 mL of 0.1000 M NaOH. The excess NaOH is titrated with 20.00 mL of 0.2000 M HCl. Find the mass % of benzoic acid.
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