Calculate the ph of a solution that is 15 m na2hpo4aq and, Chemistry

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Calculate the ph of a solution that is 15 m na2hpo4aq and

1. Calculate the pH of a solution that is .15 M Na2HPO4(aq) and .44 M Na3PO4(aq). Not sure how to solve it. The ka1 of H3PO4 is 7.6 x 10^-3, pKa1 is 2.12, ka2 is 6.2 x 10^-8, pka2 is 7.21, ka3 is 2.1 x 10^-13, pka3 is 12.68.

2. Calculate the pH that results from mixing .173 L of .089 M (CH3)2NH(aq) with .343 L of .055 M (CH3)2NH2Cl(aq).

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Chemistry: Calculate the ph of a solution that is 15 m na2hpo4aq and

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Chemistry: Calculate the ph of a solution that is 15 m na2hpo4aq and

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