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.**Question:** What is the Fe^3+ concentration of the unknown solution?**Graph Explanation:** The graph on the right is titled “Iron(III) thiocyanate standard curve.” It plots absorbance on the y-axis against Fe^3+ concentration (M) on the x-axis. The curve is a straight line with data points marked. The line starts near the origin and rises steadily, illustrating a direct relationship between absorbance and concentration. The x-axis shows concentrations ranging from 0 to 0.0002 M, and the y-axis ranges from 0 to 1 in absorbance units.**Calculation Area:** \[ [Fe^{3+}] = \] \(\_\_\_\_\_\_\) mol/L

Here we are required to find the Fe3+ concentration of the unknown solution.

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

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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