A mixture of toluene, dichloromethane and o-xylene is eluted on a non-polar gas chromatography column. The...

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A mixture of toluene, dichloromethane and o-xylene is eluted on a non-polar gas chromatography column. The chromatogram obtained is shown below: ÇH, CH, I3D 1000 CH, 0-xylene toluene dichloromethane 500 10 15 Time (min) a) Choose ONE (1) parameter below for the above analysis and justify C18 column or capillary column i. Helium or oxygen carrier gas Low temperature or high temperature (6 marks) Identify the compounds that are represented by peak I, Il and I. Explain your answer. b) (6 marks) A mixture of toluene, dichloromethane and o-xylene is eluted on a non-polar gas chromatography column. The chromatogram obtained is shown below: ÇH, CH, I3D 1000 CH, 0-xylene toluene dichloromethane 500 10 15 Time (min) a) Choose ONE (1) parameter below for the above analysis and justify C18 column or capillary column i. Helium or oxygen carrier gas Low temperature or high temperature (6 marks) Identify the compounds that are represented by peak I, Il and I. Explain your answer. b) (6 marks)