Q.

Which of the following is more volatile ?

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a

CH3CH2CH2OH

b

Glycerol

c

CH3OH

d

OH-CH2-CH2-CH2-OH

answer is D.

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Detailed Solution

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The compound with more intermolecular forces in it, will have high boiling point and less volatile. As number of -OH groups increases, extent of hydrogen bond increases also boiling point increases. As molecular weight decreases, boiling point decreases and becomes easily volatile.

Hence, CH3OH is more volatile. 

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