When ammonium sulfate dissolves, both the cation and the anion have acid-base reactions: (NH4)2SO4(s) = 2NH4* + SO,2 Ksp = 276 NH4* + H20 = NH3(aq) + H3O+ Ka = 5.70 x 10 10 SO,2- + H20 = HSO4 + OH Kp = 9.80 x 10-13

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