In lab, you measure out 13.58 mL of 1.07 M phosphoric acid to titrate with KOH. What volume (in mL) of 0.939 M KOH is required to reach the first equivalence point? Give your answer to one decimal place. Your Answer:

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A: Volume of H3PO4 = 13.20 ml Molarity of H3PO4 = 1.18 M Molarity of KOH = 0.848 M