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# Mole and Weight Percent Composition

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Gas chromatographic analysis of a mixture of organic compounds gave the following peak areas (sq cm): hexane = 2.7; heptane = 1.6; hexanol = 1.8; toluene = 0.5.

(a) Calculate the mole percent composition of the mixture. Assume that the response of the detector (area per mole) is the same for each component.

(b) Calculate the weight percent composition of the mixture, using the same assumptions as in part A.

##### Solution Summary

This solution is provided in 218 words. It calculates moles and molar mass to find the mass percentage of the gases.

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(a) Total moles = 2.7 + 1.6 + 1.8 + 0.5 = 6.6 moles

mole percent of hexane = (2.7/6.6)*100 = 40.91%

mole percent of heptane = (1.6/6.6)*100 = 24.24%

mole percent of hexanol = (1.8/6.6)*100 = 27.27%

mole percent of ...

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