0731. Solving a chemistry problem
242. A reaction mass of 12.6800 g after nitration of toluene was analyzed by gas-liquid chromatography using ethylbenzene as an internal standard in an amount of 1.1500 g. Determine the mass fraction (%) of unreacted toluene using the following data:
Component toluene ethylbenzene
Peak area, m2 309 350
Correction factor 1.00 1.03
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