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5. (6 pts) The pH of an acetic acid (CH3COOH) solution is 6.20. Calculate the concentration...

5. (6 pts) The pH of an acetic acid (CH3COOH) solution is 6.20. Calculate the concentration
of hydronium ion (H3O+, in M) in this solution. (Ka = 1.8 x 10–5)
3
For questions 6-8, consider the titration of of 5.00 mL of 0.450 M HBr using 0.120 M NaOH as
the Btrant.
6. (6 pts) Calculate the volume of 0.120 M NaOH that must be added in order to reach the
equivalence point.

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