The weight and mole percent compositions of the distillation fractions A, B and C need to be determined. Concept Introduction: The results of the gas chromatography are obtained as peaks on the chromatogram. From these peaks, the relative amount of each of the components of the mixture can be determined. It is assumed that peaks are symmetrical; the area under the peak can be calculated taking it an equilateral triangle. The area under the peak can be calculated as product of the width at half of its height and height of the peak. This varies with compound to compound. The analysis of various functions obtained during fractional distillation of the mixture of toluene and cyclohexane gives GLC traces in figure 6.16. Peak having shorter retention time is for cyclohexane and with larger time is for toluene.

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Chapter 6.4, Problem 2E

Interpretation Introduction

Interpretation: The weight and mole percent compositions of the distillation fractions A, B and C need to be determined.

Concept Introduction: The results of the gas chromatography are obtained as peaks on the chromatogram. From these peaks, the relative amount of each of the components of the mixture can be determined. It is assumed that peaks are symmetrical; the area under the peak can be calculated taking it an equilateral triangle. The area under the peak can be calculated as product of the width at half of its height and height of the peak. This varies with compound to compound. The analysis of various functions obtained during fractional distillation of the mixture of toluene and cyclohexane gives GLC traces in figure 6.16. Peak having shorter retention time is for cyclohexane and with larger time is for toluene.

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