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Unformatted text preview: 2. You have 400. mL of a buffer that is 0.10 M in H 2 PO 4-and 0.40 M in HPO 4 2-. a. (1) What is the pH of this buffer? b. (6) What volume of 3.00 M HBr (aq) or 3.00 M KOH (aq) (specify which) would be needed to change the pH of this buffer to 7.10? c. (3) What mass of NaH 2 PO 4 or Na 2 HPO 4 would be needed to change the pH of the original buffer to 7.10?...
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- Spring '10
- pH, Trigraph, Equivalence point, Ford Ka