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Calculate the pH at the following intervals if 30mL 0.20M of formic acid, HCHO2 is titrated...

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Chemistry

Calculate the pH at the following intervals if 30mL 0.20M offormic acid, HCHO2 is titrated with 0.15M NaOH. ForHCHO2 Ka = 1.8 x 10-4

a) before any NaOH has been added

b) after a total of 15.0mL of NaOH has been added

c) at the equivalence point

d) after a total of 50.0mL of NaOH has been added.

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