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Which would have a shorter retention time using prep GC? 3-pentanol or 2-heptanone and why

Which would have a shorter retention time using prep GC? 3-pentanol or 2-heptanone and why

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Answer #1

Gas-chromatography is generally useful technique for analysis of separation of volatile components.

It may be solid-gas (adsorption based) Or liquid/gas chromatography(Partition based)

It is generally part of column chromatography.

Retention time is the amount of time of the component spend on the column after injected sample and up to elution.

Since more volatile compound is eluted firstly therefore its retention time isvery lessthan less volatile.

Out of 3-pentanol and 2-heptanone, 2-heptanone is more volatile therefore it has shorter R. T.

3-pentanol is an alcohol, has intermolecular hydrogen bond, B.P.high than ketone.

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