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Calculate the pH after 0.14 mole of NaOH is added to 1.08 L of a solution that is 0.49 M HC3H5O3 and 1.24 M NaC3H5O3, and calculate the pH after 0.28 mole of HCl is added to 1.08 L of the same solution of HC3H5O3 and NaC3H5O3.

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