The standard curve was made by spectrophotographic analysis of equilibrated iron(III) thiocyanate solutions of known concentration. You are asked to analyze a Fe(SCN)2+ solution with an unknown concentration and an absorbance value of 0.392. The slope-intercept form of the equation of the line is y= 4538.1x +0.0077. The unknown was analyzed on the same instrument as the standard curve solutions at the same temperature. What is the Fe3+ concentration of the unknown solution? [Fe³+] = mol/L Absorbance Iron(III) thiocynate standard curve 1.0 0.5- 0 0.0001 Fe³+ concentration (M) 0.0002
The standard curve was made by spectrophotographic analysis of equilibrated iron(III) thiocyanate solutions of known concentration. You are asked to analyze a Fe(SCN)2+ solution with an unknown concentration and an absorbance value of 0.392. The slope-intercept form of the equation of the line is y= 4538.1x +0.0077. The unknown was analyzed on the same instrument as the standard curve solutions at the same temperature. What is the Fe3+ concentration of the unknown solution? [Fe³+] = mol/L Absorbance Iron(III) thiocynate standard curve 1.0 0.5- 0 0.0001 Fe³+ concentration (M) 0.0002
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
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![The standard curve was made by spectrophotographic analysis of equilibrated iron(III) thiocyanate solutions of known
concentration. You are asked to analyze a Fe(SCN)2+ solution with an unknown concentration and an absorbance value of
0.392. The slope-intercept form of the equation of the line is y = 4538.1x +0.0077. The unknown was analyzed on the same
instrument as the standard curve solutions at the same temperature.
What is the Fe³+ concentration of the unknown solution?
[Fe³+] =
mol/L
Absorbance
Iron(III) thiocynate standard curve
1.0
V
0.5
0.0001
Fe³+ concentration (M)
0
0.0002](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2f591c64-216a-4120-ac44-1b23dfa641af%2F9ee99b1b-d758-493b-943a-4df316997d10%2F8dxk49x_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The standard curve was made by spectrophotographic analysis of equilibrated iron(III) thiocyanate solutions of known
concentration. You are asked to analyze a Fe(SCN)2+ solution with an unknown concentration and an absorbance value of
0.392. The slope-intercept form of the equation of the line is y = 4538.1x +0.0077. The unknown was analyzed on the same
instrument as the standard curve solutions at the same temperature.
What is the Fe³+ concentration of the unknown solution?
[Fe³+] =
mol/L
Absorbance
Iron(III) thiocynate standard curve
1.0
V
0.5
0.0001
Fe³+ concentration (M)
0
0.0002
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