calculating the concentration of acid in each buffer solution show in the second picture

Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter1: Introduction
Section: Chapter Questions
Problem 1.11QAP
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I need help calculating the concentration of acid in each buffer solution show in the second picture!!!!

ALSO - make sure for the unrounded values there is 6 sig figs!!

 

EXPERIMENTAL DATA

Sample HIn (mL) 1.10 M Acetic Acid (mL) 0.90 M Sodium Acetate (mL)
1 10.00 8.00 2.00
2 10.00 7.00 3.00
3 10.00 6.00 4.00
4 10.00 5.00 5.00
5 10.00 4.00 6.00
6 10.00 3.00 7.00
7 10.00 2.00 8.00
8 10.00 1.00 9.00
9 10.00 10.00 mL NaOH (0.10 M)
10 10.00 10.00 mL HCl (0.10 M)
 
CALCULATED VALUES
EXPERIMENTAL DATA
SAMPLE
[H,0*1(M)
ABSORBANCE
1
8.8e-5
0.058693
5.13 e-5
0.100357
3.3e-5
0.138553
2,2 e-5
0.192163
4
1.47e-5
0.220571
9.42 e-6
6.29434い
6.
7
ら.5e-6
0.336445
2.44e-6
0.572272
8.
NAH
2.0 e- 13
O.4001944
10
5.0e-9
- 0. 002597
Hcl
Calculated Values/Values from the Graph
Calculated absorbance A, for [HIn] = [In]
0.1987985c
%3D
K
K of bromocresol green (experimental value) 2.2857 e-05
pK of bromocresol green
Total indicator concentration, test tube
Total indicator concentration, stock solution
2.
5
Transcribed Image Text:CALCULATED VALUES EXPERIMENTAL DATA SAMPLE [H,0*1(M) ABSORBANCE 1 8.8e-5 0.058693 5.13 e-5 0.100357 3.3e-5 0.138553 2,2 e-5 0.192163 4 1.47e-5 0.220571 9.42 e-6 6.29434い 6. 7 ら.5e-6 0.336445 2.44e-6 0.572272 8. NAH 2.0 e- 13 O.4001944 10 5.0e-9 - 0. 002597 Hcl Calculated Values/Values from the Graph Calculated absorbance A, for [HIn] = [In] 0.1987985c %3D K K of bromocresol green (experimental value) 2.2857 e-05 pK of bromocresol green Total indicator concentration, test tube Total indicator concentration, stock solution 2. 5
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