A certain sample was analyzed by proton NMR and found to consist of ortho-xylene

Question

A certain sample was analyzed by proton NMR and found to consist of ortho-xylene (boiling point 144° C), para-xylene (boiling point 137°C) and meta-xylene (boiling point 139°C). Rank these compounds in order of relative GC retention times (longest GC retention time first). O ortho-xylene > meta-xylene> para-xylene O ortho-xylene para-xylene> meta-xylene O meta-xylene ortho-xylene para-xylene O meta-xylene > para-xylene > ortho-xylene O para-xylene ortho-xylene > meta-xylene O para-xylene > meta-xylene > ortho-xylene

Explanation / Answer

Gc retention time is proportional to boiling point.

higher the boiling point longer the retention time.

1st option is the right answer

ortho >meta >para

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