Molar Mass [HA] disodium hydrogen citrate 5 sesquihydrate C6H6Na2O7 1.5H₂O 263.1 g/mol dihydrate C6H5Na3O7 2H₂O 294.1 g/mol Calculate the grams of [HA] and [A-] needed to prepare 40 mL of a 0.2 M citrate buffer solution. Show all work here. pH Buffer citrate buffer pka pka2 = 4.76 Molar Mass [A] trisodium citrate

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