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  1. Find the pH of the following - 
  2. A:  17.91 g Na2HPO4*12H20 - 1.7 mL 1M NaOH - 998.3 mL H2O 
  3. B:  13.16 g citric acid monohydrate - 25 mL 1M NaOH - 975 mL H2O
  4. C:  0.49 g NaH2PO4*H2O - 12.49 g Na2HPO4*12H2O - 1L H2O
  5. D:  13.16 g citric acid monohydrate - 171 mL 1M NaOH - 829 mL H2O
  6. E:  17.91 g Na2HPO4*12H2O - 11.7 mL 1M NaOH - 988.3mL H2O
  7. F:  20.17 g citric acid monohydrate - 200 mL 1M NaOH - 800 mL H2O
  8. G:  13.16 g citric acid monohydrate - 75 mL 1M NaOH - 925 mL H2O
  9. H:  2.92 g NaH2PO4*H2O - 7.73 g Na2HPO4*12H2O - 1L H2O
  10. I:  17.91 g Na2HPO4*12H2O - 1L H2O

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Citric acid monohydrate (Molecular weight - 210.14, pKa - 3.128, 4.761, 6.396)

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Na2HPO4*12H2O (Molecular weight - 358.14, pKa - 2.148, 7.198, 12.375)

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NaH2PO4*H2O (Molecular weight - 137.99, pKa - 2.148, 7.198, 12.375)

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