You have a number of alcohols with different hydrocarbon lengths and with boiling points varying from 80 to 170C. You must set up a gas chromatography system for its separation. a) What type (polar, non-polar etc) of stationary phase in the column would you choose. Motivate. b) It turns out that the retention time of the substances differs significantly from each other at isothermal runs. What do you do about this? c) Suggest a gas chromatography detector that would work well for this separation. Describe the principle behind it and justify your choice.