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If DI water was used to calibrate the spectrometer instead of iron (III) chloride solution, how would this have affected the reported absorbance of the solutions (increased, decreased, or unaffected)

Answer :

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If deionized water is used instead of the test iron (III) chloride solution, the reported values of the absorbance of the solutions will be highly increased.

What is a spectrometer ?

A spectrometer is an instrument that measures the concentration of a colored substance as a function of its absorbance. Before a measurement is taken, the instrument is first calibrated using different concentrations of the test solution.

If deionized water is used instead of the test iron (III) chloride solution, the reported values of the absorbance of the solutions will be highly increased.

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