tion 13 of 24 > 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 0.179. The slope-intercept form of the equation of the line is y = 4536.6x + 0.0392. 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? Iron(III) thiocynate standard curve 1.0 mol/L [Fe**] = 0.5 - 0.0001 0.0002 Fet concentration (M) Absorbance

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...
icon
Related questions
Question
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 0.179. The slope-intercept form of the equation of the line is \( y = 4536.6x + 0.0392 \). 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?**

\[ \text{[Fe}^{3+}\text{]} = \]

**mol/L**

**Graph Explanation:**

The graph provided is titled "Iron(III) thiocyanate standard curve." It is a linear plot with absorbance on the y-axis and Fe³⁺ concentration in molarity (M) on the x-axis. The data points form a straight line that increases linearly, indicating a direct proportional relationship between absorbance and concentration. The line begins near the origin and rises steadily, illustrating the use of Beer’s Law.
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 0.179. The slope-intercept form of the equation of the line is \( y = 4536.6x + 0.0392 \). 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?** \[ \text{[Fe}^{3+}\text{]} = \] **mol/L** **Graph Explanation:** The graph provided is titled "Iron(III) thiocyanate standard curve." It is a linear plot with absorbance on the y-axis and Fe³⁺ concentration in molarity (M) on the x-axis. The data points form a straight line that increases linearly, indicating a direct proportional relationship between absorbance and concentration. The line begins near the origin and rises steadily, illustrating the use of Beer’s Law.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY