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

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Chemistry

Calculate the [H3O+] and pH of each polyprotic acidsolution.
Dissociation Constants for Acids at 25 âˆ˜C
Formula Ka1 Ka2 Ka3
H2CO3 4.3Ã—10âˆ’7 5.6Ã—10âˆ’11
H3C6H5O7 7.4Ã—10âˆ’4 1.7Ã—10âˆ’5 4.0Ã—10âˆ’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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Formula	Ka1	Ka2	Ka3
H2CO3	4.3Ã—10âˆ’7	5.6Ã—10âˆ’11
H3C6H5O7	7.4Ã—10âˆ’4	1.7Ã—10âˆ’5	4.0Ã—10âˆ’7