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1. A solution of 0.250 M NaOH was used to titrate 50.00 mL of 0.250 M of a weak acid HX; (Ka= 3.6 x 10^-7) for the addition of each of the following volumes of sodium hydroxide, calculate the pH of the resultant solution: (a) 0.00 mL, (b) 5.00 mL, (c) 25.00 mL, (d) 45.00 mL, (e) 50.00 mL, (f) 51.00 mL.

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