Quantitative Analysis By Spectrophotometric Methods
Abstract
In this experiment, the absorbance of KMnO4 was measured by spectrophotometric method to determine the molar concentration and the molar extinction coefficient of KMnO4. In part 1, in order to determine the maximum absorbance wavelength of KMnO4, we measured the absorbance of the sample solution which contains KMnO4 at the wavelengths between 330nm and 660nm, and plotted the λ and A points; the λmax was 530nm. In part 2, the effect of concentration on the absorbance was examined. We prepared five differently concentrated (but, same path length) solutions, and measured the absorbance of them at the λmax(530nm) discovered in part 1; According to the results, higher concentrated solution had higher absorbance value. The extinction coefficient(ε) could be calculated from the results determined in part 2 and Beer’s Law; ε = 1.7 x 103. In part 3, the absorbance of the KMnO4 solution of unknown concentration was measured, and using Beer’s law and dilution equation,......
View the rest of this paper...
Approximate Word Count: 1997
Approximate Pages: 8 (250 words per double-spaced page)
Why should you join Frat Files?
- - It's safe, secure, and private.
- - Instant access to over 100,000 papers. New papers are added hourly.
- - Fast and reliable customer support.
Similar Essays
-
Quantitative Analysis By Spectrophotometric Methods
quantitative analysis by spectrophotometric methods Abstract In this experiment, the absorbance of KMnO4 was measured by spectrophotometric method to determine the molar
-
% Copper In An Ore
% Copper In An Ore Quantitative Analysis: % Copper in an Ore May 3, 2006 Abstract: In this experiment we were given an unknown sample of ore. Using the spectrophotometric analysis
-
-
-
Frat Files
Members
Information
© 2009 FratFiles.com.