4. The total absorbance of a solution is the sum of the absorbances of all different materials present. AT = Aa +Ap + Ac .. etc. At 427 nm, the molar absorbtivity of Yellow #5 is 2.73×10°M-1-cm1. At 427 nm the molarabsorptivity of Red 40 is 7.49x103 M-1.cm-1. Calculate the total absorbance of a solution in which theconcentration of Yellow #5 = 2.00x10-5 M and the concentration of Red 40 = 4.80x10-5 M, when measured at427 nm in a 1.00 cm cell.

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The total absorbance of a solution is the sum of the absorbances of all different materials present. AT = Aa + Ab + Ac ... etc. At 427 nm, the molar absorbtivity of Yellow #5 is 2.73×10ª M-1-cm¯1. At 427 nm the molar absorptivity of Red 40 is 7.49x10³ M-1-cm-1. Calculate the total absorbance of a solution in which the concentration of Yellow #5 = 2.00x10-5 M and the concentration of Red 40 = 4.80×10-5 M, when measured at 427 nm in a 1.00 cm cell.

The total absorbance of a solution is the sum of the absorbances of all different materials present. AT = Aa + Ab + Ac ... etc. At 427 nm, the molar absorbtivity of Yellow #5 is 2.73×10ª M-1-cm¯1. At 427 nm the molar absorptivity of Red 40 is 7.49x10³ M-1-cm-1. Calculate the total absorbance of a solution in which the concentration of Yellow #5 = 2.00x10-5 M and the concentration of Red 40 = 4.80×10-5 M, when measured at 427 nm in a 1.00 cm cell.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter13: An Introduction To Ultraviolet-visible Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 13.24QAP

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