Using the titration curve below for an unknown weak acid which has a half-equivalence point at...

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Answer 1

Answer #1

at half equivalence point : pH = pKa

pH = 7.20

pKa = 7.20

Ka = 10^-pKa

Ka = 10^-7.20

Ka = 6.3 x 10^-8

acid is dihydrogen phosphate (H₂PO₄^-)

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Answer 2

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