Three compounds—methanol (CH OH)

CHEMISTRY · Single correct · A Level · Chemistry · Chromatography · Chromatography

Problem

Three compounds—methanol (CH

_3

OH), acetone (CH

_3

COCH

_3

), and n-hexane (C

_6

_{14}

)—are spotted together on a silica gel TLC plate and developed with a 70:30 hexane–ethyl acetate solvent mixture. After development, three spots are observed at

R_{f}

values of 0.15, 0.48, and 0.83 (in no particular order). Which matching of compound to

R_{f}

value is most reasonable? (a) methanol → 0.83, acetone → 0.48, n-hexane → 0.15 (b) methanol → 0.15, acetone → 0.48, n-hexane → 0.83 (c) methanol → 0.15, acetone → 0.83, n-hexane → 0.48 (d) methanol → 0.48, acetone → 0.15, n-hexane → 0.83

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