Beer's Law Plot for Tartrazine Concentration Absorbance Linear Fit for: Data Set | Absorbance (µM or umol/L) Abs = mx+b m (Slope): 0.02534 +/- 0.0003590 0.001 0.00 b (Y-Intercept): -0.0009147 +/- 0.008746 Correlation: 0.9997 0.252 9.94 RMSE: 0.01129 0.5 19.9 0.506 29.8 0.738 39.8 1.018 10 30 40 20 Concentration (uM) slope (m): 0.02534 1/(µM) y-intercept (b): -0.0009147 Absorbance
Beer's Law Plot for Tartrazine Concentration Absorbance Linear Fit for: Data Set | Absorbance (µM or umol/L) Abs = mx+b m (Slope): 0.02534 +/- 0.0003590 0.001 0.00 b (Y-Intercept): -0.0009147 +/- 0.008746 Correlation: 0.9997 0.252 9.94 RMSE: 0.01129 0.5 19.9 0.506 29.8 0.738 39.8 1.018 10 30 40 20 Concentration (uM) slope (m): 0.02534 1/(µM) y-intercept (b): -0.0009147 Absorbance
Chapter24: Introduction To Spectrochemical Methods
Section: Chapter Questions
Problem 24.16QAP
Related questions
Question
1) Calculate the molar extinction coefficient (molar absorptivity) of tartrazine in units of 1/(M·cm). Assume a cuvette path length of 1.00 cm.
2) If Ana determines the absorbance of an unknown tartrazine sample to be 0.662, what is the concentration of the sample in µM?
![Beer's Law Plot for Tartrazine
Concentration
Absorbance
Linear Fit for: Data Set | Absorbance
(µM or umol/L)
Abs = mx+b
m (Slope): 0.02534 +/- 0.0003590
0.001
0.00
b (Y-Intercept): -0.0009147 +/- 0.008746
Correlation: 0.9997
0.252
9.94
RMSE: 0.01129
0.5
19.9
0.506
29.8
0.738
39.8
1.018
10
30
40
20
Concentration (uM)
slope (m): 0.02534 1/(µM)
y-intercept (b): -0.0009147
Absorbance](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd09e7fa1-0626-44b5-87eb-1406674e34ba%2F5bf89248-1abf-4c3a-8ddf-47ec3d0b5cff%2Fjz90jkn.png&w=3840&q=75)
Transcribed Image Text:Beer's Law Plot for Tartrazine
Concentration
Absorbance
Linear Fit for: Data Set | Absorbance
(µM or umol/L)
Abs = mx+b
m (Slope): 0.02534 +/- 0.0003590
0.001
0.00
b (Y-Intercept): -0.0009147 +/- 0.008746
Correlation: 0.9997
0.252
9.94
RMSE: 0.01129
0.5
19.9
0.506
29.8
0.738
39.8
1.018
10
30
40
20
Concentration (uM)
slope (m): 0.02534 1/(µM)
y-intercept (b): -0.0009147
Absorbance
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