The following is a titration curve for a monoprotic weak acid. 0.200 grams of the acid was dissolved in 50.00 mls of water and titrated with a 0.150 M solution of NaOH. 14.00 13.00 12.00 11.00 10.00 9.00 8.00 pH 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 Vol. Base (mL) What is the pKa of the acid? How many moles of acid were present? What is the molecular weight of the acid? What pH range should the indicator change color to determine the endpoint of titration? Over what pH range is [HA]> [A]? 00 08 25.00 00'0 00 0 00 9 00 0

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 34QRT
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what pH range should the indicator change color to determine the endpoint of titration?

Over what pH range is [HA]>[A-]?

The following is a titration curve for a monoprotic weak acid. 0.200 grams of
the acid was dissolved in 50.00 mls of water and titrated with a 0.150 M
solution of NaOH.
14.00
13.00
12.00
11.00
10.00
9.00
8.00
pH 7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
Vol. Base (mL)
What is the pKa of the acid?
How many moles of acid were present?
What is the molecular weight of the acid?
What pH range should the indicator change color to determine the endpoint
of titration?
Over what pH range is [HA]> [A]?
00 08
25.00
00'0
00 0
00 9
00 0
Transcribed Image Text:The following is a titration curve for a monoprotic weak acid. 0.200 grams of the acid was dissolved in 50.00 mls of water and titrated with a 0.150 M solution of NaOH. 14.00 13.00 12.00 11.00 10.00 9.00 8.00 pH 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 Vol. Base (mL) What is the pKa of the acid? How many moles of acid were present? What is the molecular weight of the acid? What pH range should the indicator change color to determine the endpoint of titration? Over what pH range is [HA]> [A]? 00 08 25.00 00'0 00 0 00 9 00 0
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