Use acid-base titration to determine theconcentration of:– A strong acid: HCl0.100 M NaOH (standardized)•0.100 M HCl0.100 M CH3COOHPhenolphthalein is used for endpoint determination– Changes from colourless to pink as a solution becomes more basic• Only need 2-3 drops per titration• pH range: 8.3-10 Acid-Base TitrationStrong Acid-Strong BaseFinal Burette Reading(mL)pHInitial Burette ReadingTotal Volume added(mL)(mL)1.890.000.000.001.970.002.022.022.092.024.024.022.254.026.026.022.496.028.018.012.978.09.83.079.8110.0210.023.2010.0210.2110.213.6510.2110.4610.464.3910.4610.7610.766.0510.7610.9610.9610.7210.9611.9611.9611.6111.9613.8613.8611.8913.8615.9615.9612.0115.9617.8617.8612.1217.8620.0220.02Solution changed colour from colourless to pink after 10.96mL of NaOH was added to solution.

Given : Concentration of NaOH used = 0.100 M Volume of NaOH solution required to reach endpoint i.e…

Answered: Use acid-base titration to determine…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 51P

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Use acid-base titration to determine the
concentration of:
– A strong acid: HCl

0.100 M NaOH (standardized)
•0.100 M HCl
0.100 M CH3COOH

Phenolphthalein is used for endpoint determination
– Changes from colourless to pink as a solution becomes more basic
• Only need 2-3 drops per titration
• pH range: 8.3-10

Acid-Base Titration
Strong Acid-Strong Base
Final Burette Reading
(mL)
pH
Initial Burette Reading
Total Volume added
(mL)
(mL)
1.89
0.00
0.00
0.00
1.97
0.00
2.02
2.02
2.09
2.02
4.02
4.02
2.25
4.02
6.02
6.02
2.49
6.02
8.01
8.01
2.97
8.0
9.8
3.07
9.81
10.02
10.02
3.20
10.02
10.21
10.21
3.65
10.21
10.46
10.46
4.39
10.46
10.76
10.76
6.05
10.76
10.96
10.96
10.72
10.96
11.96
11.96
11.61
11.96
13.86
13.86
11.89
13.86
15.96
15.96
12.01
15.96
17.86
17.86
12.12
17.86
20.02
20.02
Solution changed colour from colourless to pink after 10.96mL of NaOH was added to solution.

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