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a. How many mL of a .1 N solution of NaOH must be added to a 25 mL solution of .1 N HAc to obtain a pH of 9.75? What is the concentration of HAc at this pH

b. Answer the same question with the following changes: [HAc]= .01 N in 25 mL and the normality of the titrant is .02 N. The final pH is 11.00

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