р-хylene о-хуlene p-xylene mp 0-xylene mp = -25 degrees C, bp = 144 degrees C, density = 0.880 g/cm3, insol in water 13 degrees C, bp = 137 degrees C, density = 0.861 g/cm3, insol in water You have purchased a sample of p-xylene and want to know if it contains any o-xylene. Which would be the most effective analytical method? a) gas chromatography b) melting point c) infrared spectroscopy d) thin layer chromatography

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.