A 0.425 g sample of steel is dissolved in acid, and the manganese oxidized to permanganate. The solution is made up to 100 mL in a volumetric flask and the absorbance at 520 nm in a 2.0 cm cell is 0.80. The molar absorptivity of permanganate at 520 nm is 2235. Calculate the percentage of Mn in the steel.

A 0.425 g sample of steel is dissolved in acid, and the manganese oxidized to permanganate. The solution is made up to 100 mL in a volumetric flask and the absorbance at 520 nm in a 2.0 cm cell is 0.80. The molar absorptivity of permanganate at 520 nm is 2235. Calculate the percentage of Mn in the steel.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter26: Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 26.15QAP

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