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Calculate the pH after 1.0 mL of 0.100 M HCl has been added to 40.0 mL...

Calculate the pH after 1.0 mL of 0.100 M HCl has been added to 40.0 mL of 0.100 M piperazine. (pKa1 = 5.333 and pKa2 = 9.731.)

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