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Kw = 1.00 x 10-14 A 20.0 mL sample of 0.200M HCl solution is titrated with...

Kw = 1.00 x 10-14

A 20.0 mL sample of 0.200M HCl solution is titrated with 0.200M NaOH solution. Calculate the pH of the solution after the following volumes of the base have been added. Please show all work and explain. Thank you :)

a) 13.0 mL of NaOH   

b) 28.0 mL of NaOH  

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