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2. (2 pts) Which substance could you add to each solution to make it a buffer solution? b. 0.050 M HF C. 0.050 M CH3COOH 3. (5. (7 pts) A 10.0 ml sample of an unknown H3PO4 solution requires 112 ml of 0.100 M KOH to completely react with the H3PO4 a.

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