If the stoichiometric concentrations of Ac- and HAc in Solution C were known to be 0.02816 M and 0.07104 M, respectively after mixing, then calculate the theoretical pH of Solution C after mixing. Use the literature value for the pKa of acetic acid, which is 4.77. Report your final answer to 2 decimal places. Solution C contains 20mL of buffer and 5mL of HCl.

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