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Question- You have a 1.00 L solution of .123 molarity benzoic acid, a weak monoprotic acid. You also have NaOH. How many moles of NaOH do you have to add to the benzoic acid if you want to make a buffer with a pH of 4.2? Assume no volume change. Ka(Benzoic acid) = 6.3x10^-5

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