It was decided to analyze a waste solution that contains an unknown concentration of Mn²* ions using colorimetry. A strong oxidizing agent was added to a 6.40 ml sample of the solution to convert the colorless manganese ions into purple permanganate ions. After the reaction is complete, the solution was diluted to 250.0 mlL and analyzed in a colorimeter. The percent transmittance of the solution was determined to be 46.0%. Also a calibration curve was prepared by using a series of solutions with known concentrations of permanganate and the equation for the best fit line was found. y = 1910 - x + 0.035 What is the absorbance of the permanganate in the diluted waste solution? A = What is the concentration of the permanganate in the diluted waste solution? concentration: M What is the concentration of the Mn²+ ions in the original waste solution? [Mn *] =

It was decided to analyze a waste solution that contains an unknown concentration of Mn²* ions using colorimetry. A strong oxidizing agent was added to a 6.40 ml sample of the solution to convert the colorless manganese ions into purple permanganate ions. After the reaction is complete, the solution was diluted to 250.0 mlL and analyzed in a colorimeter. The percent transmittance of the solution was determined to be 46.0%. Also a calibration curve was prepared by using a series of solutions with known concentrations of permanganate and the equation for the best fit line was found. y = 1910 - x + 0.035 What is the absorbance of the permanganate in the diluted waste solution? A = What is the concentration of the permanganate in the diluted waste solution? concentration: M What is the concentration of the Mn²+ ions in the original waste solution? [Mn *] =

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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Concept explainers

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

It was decided to analyze a waste solution that contains an unknown concentration of Mn** ions using colorimetry. A strong
oxidizing agent was added to a 6.40 mL sample of the solution to convert the colorless manganese ions into purple
permanganate ions. After the reaction is complete, the solution was diluted to 250.0 mL and analyzed in a colorimeter. The
percent transmittance of the solution was determined to be 46.0%. Also a calibration curve was prepared by using a series of
solutions with known concentrations of permanganate and the equation for the best fit line was found.
y = 1910 - x + 0.035
What is the absorbance of the permanganate in the diluted waste solution?
A =
What is the concentration of the permanganate in the diluted waste solution?
concentration:
M
What is the concentration of the Mn2+ ions in the original waste solution?
[Mn²+1 =
M

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