Sodium ammonium hydrogen phosphate, is a salt in which one
Chapter 17, Problem 84(choose chapter or problem)
Sodium ammonium hydrogen phosphate, is a salt in which one of the ionizable H atoms of is replaced by another is replaced by and the third remains in the anion Calculate the pH of 0.100 M [Hint: You can use the general method introduced on page 720. First, identify all the species that could be present and the equilibria involving these species. Then identify the two equilibrium expressions that will predominate and eliminate all the species whose concentrations are likely to be negligible. At that point, only a few algebraic manipulations are required.] NaNH4HPO4(aq). HPO4 NH 2-. 4 +, Na+H3PO4 , HPO4 , NaNH4 HO2 -. H2O2 pK H2O2 0 C. a pKw 0 C, = 14.94. H2O2 H2O2 H2O2 H2O2 0 C. H2O2 pKa H2O2 + H2O H3O+ + HO2 - H2O2 , NH3 NH4 ? + HPO4 2-H2PO4 , - CH3COO -CH3COOH , (pKa = 3.86) CH3CH(OH)COOH NaHCOO. CH3COOH NaH2PO4 .
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