A researcher prepared mixed solutions at different concentrations and measured the absorbances with the help of a spectrophotometer. In the spectrophotometer device, the distance between the cuvette and the light diffuser is 3 cm. The absorbance values of the mixture given in the table below. Mixture V (ml) %T Absorbans Concentrations (g/I) 5 37 ,55 0,444 0,21M 4 40,89 0,372 0,26M 3 44,97 0,311 0,35M 2 67,50 0,172 0,71M 1 82,65 0,084 0,97M a) Explain how to prepare 1N H2SO4 solution. b) Calculate the ɛ values and the total absorbance for each volume value opposite. c) Explain the relationship between permeability and absorbance.

A researcher prepared mixed solutions at different concentrations and measured the absorbances with the help of a spectrophotometer. In the spectrophotometer device, the distance between the cuvette and the light diffuser is 3 cm. The absorbance values of the mixture given in the table below. Mixture V (ml) %T Absorbans Concentrations (g/I) 5 37 ,55 0,444 0,21M 4 40,89 0,372 0,26M 3 44,97 0,311 0,35M 2 67,50 0,172 0,71M 1 82,65 0,084 0,97M a) Explain how to prepare 1N H2SO4 solution. b) Calculate the ɛ values and the total absorbance for each volume value opposite. c) Explain the relationship between permeability and absorbance.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter25: Instruments For Optical Spectrometry

Section: Chapter Questions

Problem 25.6QAP

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