pitenim9190ISO bris stor Laboratorv Reportand Calculations:Experiment #9 - Titration Curves of Polyprotic Acidstermination of pK₂ Values of Unknown AcidFirst determinationSecond determinationmL NaOH0.0002.004.006.008.0010.0012.0014.0016.0018:0020.0022c0024.00pHosath2.292-766.526.967.077.297.637.81219.3511.3089.11.DinVpka1Ka1Average K₂1Standard Deviation of K₂1pka2Ka2Average K₂2Standard Deviation of KazmL NaOH0.002.004.006.008.0010.001200014.00016.20018-000200002200024.00Hd8.67-5.395.82(6.126.416.867.097.287.65878410-589.3511.29)11.62 VThird determinationmL NaOH0.002.004.006-008.0010.0012.0014.001600018.002000022.0024.00pH2.202.412.673.13.6.1428.78११.१6.957.317.58FirstSecondThird5+24+2·76) = 41•315 5•39+3•67=4.53 6·14+3•13=4.63510.78411.2211.5612.1010.78

Given data, pKa1= 4.315, 4.53, 4.635 pKa2=9.35, 8.78, 10.78 To calculate, Ka1 and Ka2 values…

Answered: РКА1 Ka1 a1 Average K₂1 Standard…

Science

Chemistry

РКА1 Ka1 a1 Average K₂1 Standard Deviation of K₂1 pK₂2 a2 Kaz Average K₁2 Standard Deviation of Kaz a2

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

pitenim9190
ISO bris st
or Laboratorv Report
and Calculations:
Experiment #9 - Titration Curves of Polyprotic Acids
termination of pK₂ Values of Unknown Acid
First determination
Second determination
mL NaOH
0.000
2.00
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18:00
20.00
22c00
24.00
pH
osath
2.29
2-76
6.52
6.96
7.07
7.29
7.63
7.8121
9.35
11.30
89.11.
Din
V
pka1
Ka1
Average K₂1
Standard Deviation of K₂1
pka2
Ka2
Average K₂2
Standard Deviation of Kaz
mL NaOH
0.00
2.00
4.00
6.00
8.00
10.00
12000
14.000
16.200
18-000
20000
22000
24.00
Hd
8.67-
5.39
5.82
(6.12
6.41
6.86
7.09
7.28
7.65
8784
10-58
9.35
11.29)
11.62 V
Third determination
mL NaOH
0.00
2.00
4.00
6-00
8.00
10.00
12.00
14.00
16000
18.00
20000
22.00
24.00
pH
2.20
2.41
2.67
3.13.
6.142
8.78
११.१
6.95
7.31
7.58
First
Second
Third
5+24+2·76) = 41•315 5•39+3•67=4.53 6·14+3•13=4.635
10.784
11.22
11.56
12.10
10.78

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