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Chemistry, 20.09.2020 09:01 lauren21bunch

A sample mixture of ethyl benzoate (bp 212 C) and dodecane (bp 216.2 C) is injected on two GC columns. Column A has DC710 silicone oil as the stationary phase, and column B uses polyethylene glycol as the stationary phase. Which substance would be certain to elute first from column A and would the same material be expected to elute first from column B? Which column, A or B, would be expected to give the better separation of these two substances?

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