Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.8: Stoichiometry Of Reactions In Aqueous Solution-titrations
Problem 2RC
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Question
Five standard chromium (VI) solutions were prepared through serial dilution technique with corresponding absorbance readings at 540 nm wavelength as follows:
Absorbance Concentration
A1 = 0.650 C1 = 1.9 ppm
A2 = 0.712 C2 = 4.0 ppm
A3 = 1.370 C3 = 6.0 ppm
A4 = 2.050 C4 = 8.0 ppm
A5 = 3.423 C5 = 10.0 ppm
The sample solution gives an average absorbance reading of 0.713. What is then the concentration of chromium (VI) ion in the sample?
(Note: please provide necessary solutions)
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