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Calculate the pH at the halfway point and at the equivalence point for each of the following titrations. (a) 100.0 mL of 0.42 M HC7H5O2 (Ka= 6.4 multiplied by 10-5) titrated by 0.42 M NaOH halfway point equivalence point

(b) 100.0 mL of 0.39 M C2H5NH2 (Kb = 5.6 multiplied by 10-4) titrated by 0.78 M HNO3 halfway pointe quivalence point

(c) 100.0 mL of 0.79 M HCl titrated by 0.40 M NaOH halfway point equivalence point

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