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12 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.11 M C2H3O2-. What is the pH of the resulting solution?

I understand to use the ice calculations. I don't understand what to plug into the hh equation.

See your other post above.

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