An absorbance versus concentration data for the thiocyanatoiron(III) complex at 510 nm and makes a Beer's law plot. Based on the plot, what [Fe(SCN)2+] would the student report for a solution that has an absorbance of 0.300 at 510 nm?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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An absorbance versus concentration data for the thiocyanatoiron(III) complex at 510 nm and makes a Beer's law plot.

Based on the plot, what [Fe(SCN)2+] would the student report for a solution that has an absorbance of 0.300 at 510 nm?

Also select all below closely matches the procedures to be followed in this experiment and why they are being carried out.


1)

A Beer's law plot will be used as a means to determine the equilibrium concentration of the thiocyanatoiron(III) complex.

2)
A Beer's law plot will be used to confirm known values of the equilibrium constant for the formation of the thiocyanatoiron(III) complex.

3)
To make the Beer's law calibration graph, the formation equilibrium for the thiocyanatoiron(III) complex will be flooded with a large excess of thiocyanate ion.

4)
To make the Beer's law calibration graph, the formation equilibrium for the thiocyanatoiron(III) complex will be flooded with a large excess of iron(III) ion.

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