November 27, 2015

Homework Help: College Chemistry (DrBob222)

Posted by Anonymous on Tuesday, March 25, 2014 at 5:31pm.

A solution of an unknown weak acid, HA, is titrated with 0.100 M NaOH solution. The
equivalence point is achieved when 36.12 mL of NaOH have been added. After the
equivalence point is reached, 18.06 mL of 0.100 M HCl are added to the solution and the pH
at that point is found to be 5.20. What is the pKa of this unknown acid?

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