Question

Consider the following two compounds: C5H11SH   (1-pentanethiol) C5H11OH   (1-pentanol) Which compound has the higher molar mass?...

Consider the following two compounds:

C5H11SH   (1-pentanethiol)
C5H11OH   (1-pentanol)


Which compound has the higher molar mass? _________ (1-pentanethiol or 1-pentanol)
Which compound has the higher boiling point? _________(1-pentanethiol or 1-pentanol)


Which of the following compounds would have the highest boiling point?

A)   butyl methyl ether, CH3(CH2)3OCH3

B) 1-butanol, CH3CH2CH2CH2OH

C) diethyl ether, CH3CH2OCH2CH3

D)  1-pentanol, CH3CH2CH2CH2CH2OH

Homework Answers

Answer #1

The compound with highest molar mass is: 1-pentanethiol

The compound with highest boiling point is: 1-pentanol

Explanation: The boiling point of 1-pentanol is higher than 1-pentanethiol due to the presence of hydrogen bonding in 1-pentanol. Hydrogen bonding is the strong intermolecular forces of attraction which requires highest energy to break so it has highets boiling point.

1-pentanol has the highest boiling point due to the presence of hydrogen bonding in alcohols.

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