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Calculate the pH after adding 0, 10.0, 25.0 and 30.0 mL of titrant in the titration of 50.0 mL of 0.100M NaOH with HCl 0.200 M.
the answers are:at 0 mL= 13.00at 10.0 mL= 12.69at 25.0 mL= 7.00at 30.0 mL= 1.90
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