A solvent called "mixed xylenes" contains the o-xylene, m-xylene,
p-xylene and ethyl
benzene. In the table below, the absorbances of each of the pure
components and the
absorbance of a sample of "mixed xylenes" were measured at four
different wavelengths.
All measurements used the same cell and, therefore, the same pathlength.
What is the
concentration of each compound? (Use the determinant function in EXCEL).
bX, assume X = 1
values of (molar
absorptivity)b
Wavelength(m) p-xylene m-xylene o-xylene ethylbenzene unknown
12.5 1.5020 0.0514 0.000 0.0408 0.1013
13.0 0.0261 1.1516 0.000 0.0820 0.09943
13.4 0.0342 0.0355 2.532 0.2933 0.2194
14.3 0.0340 0.0684 0.000 0.3470 0.03396
Chemistry Homework Solutions
#11548
Determine concentrations in mixture using determinants in EXCEL (correct attachment)
Please see attachment.
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