(chatquestion)...5.34 The amount of (NH,),SO, to be added to 500 mL of 0.01 M NH,OH solution (pK,for NH, is 9.26) prepare a buffer of pH 8.26 is: (1) 0.05 mole (2) 0.025 mole (3) 0.10 mole (4) 0.005 mole

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