Let H2A represent a diprotic acid and let A2 represent its corresponding base. A 40.0 mL sample of 0.25 M A²- was titrated with 0.50 M HCI. The following data were gathered during the titration. Volume HCl added (mL) 10.00 20.00 30.00 40.00 pH 11.55 10.32 5.21 4.17 What is Ka2 for H2A? 6.2 x 10-6 2.8 x 10-12 6.2 x 10-8 None of these 6.8 × 10-5 4.8 × 10-11
Let H2A represent a diprotic acid and let A2 represent its corresponding base. A 40.0 mL sample of 0.25 M A²- was titrated with 0.50 M HCI. The following data were gathered during the titration. Volume HCl added (mL) 10.00 20.00 30.00 40.00 pH 11.55 10.32 5.21 4.17 What is Ka2 for H2A? 6.2 x 10-6 2.8 x 10-12 6.2 x 10-8 None of these 6.8 × 10-5 4.8 × 10-11
General Chemistry - Standalone book (MindTap Course List)
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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.141QP: Ka for formic acid is 1.7 104 at 25C. A buffer is made by mixing 529 mL of 0.465 M formic acid,...
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![Let H2A represent a diprotic acid and let A2 represent its corresponding base.
A 40.0 mL sample of 0.25 M A2- was titrated with 0.50 M HCI. The following data were gathered
during the titration.
Volume HCl added (mL)
10.00
20.00
30.00
40.00
pH
11.55
10.32
5.21
4.17
What is Ka2 for H2A?
6.2 x 10-6
2.8 x 10-12
6.2 x 10-8
None of these
6.8 x 10-5
4.8 х 10-11](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4b03fe0e-4265-43d5-bbbe-9f8af27bf633%2F81ff7481-5ccc-46e6-9ac7-f06aeef99b81%2F6ok2zws_processed.png&w=3840&q=75)
Transcribed Image Text:Let H2A represent a diprotic acid and let A2 represent its corresponding base.
A 40.0 mL sample of 0.25 M A2- was titrated with 0.50 M HCI. The following data were gathered
during the titration.
Volume HCl added (mL)
10.00
20.00
30.00
40.00
pH
11.55
10.32
5.21
4.17
What is Ka2 for H2A?
6.2 x 10-6
2.8 x 10-12
6.2 x 10-8
None of these
6.8 x 10-5
4.8 х 10-11
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