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Calculate the [H3O+] and pH of each polyprotic acid solution. Dissociation Constants for Acids at 25 ∘C Formula Ka1 Ka2 Ka3 H2CO3 4.3×10−7 5.6×10−11 H3C6H5O7 7.4×10−4 1.7×10−5 4.0×10−7 PART...

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Chemistry

Calculate the [H3O+] and pH of each polyprotic acidsolution.

Dissociation Constants for Acids at 25 ∘C

FormulaKa1Ka2Ka3
H2CO34.3×10−75.6×10−11
H3C6H5O77.4×10−41.7×10−54.0×10−7

PART A

0.130 M H3C6H5O7 H3O+=

PART B

0.130 M H3C6H5O7 pH =

Answer & Explanation Solved by verified expert
4.4 Ratings (843 Votes)
If the Ka or pKa values are not provided in the question they should be then you have to source these from some reference list I often find some slight differences    See Answer
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