If 2 volumes of 0.1 m monobasic potassium phosphate kh2po4, Ask an Expert

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a. What is the pH of 0.1 M H3PO4? (For H3PO4, pKa1=2.12, pKa2 =7.21, pKa3 = 12.32) b. How much 0.1 M NaOH should e added to 100 ml of 0.1 M H3PO4 to create a buffer of pH 7.0? c. If 2 volumes of 0.1 M monobasic potassium phosphate, KH2PO4, are mixed with 1 volume of 0.1 M dibasic sodium phosphate, Na2HPO4, what will be the pH of the mixture?

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