Arrange the following in order of increasing boiling point. CH₃CH₂OH CH₃CH₂CH₂CH₃ H₃C-O-CH₂CH₃ CH₃CH₂NH₂
I II III IV

Question

Arrange the following in order of increasing boiling point. CH₃CH₂OH CH₃CH₂CH₂CH₃ H₃C-O-CH₂CH₃ CH₃CH₂NH₂ I II III IV A)IV < III < II < I B)II < III < IV < I C)I < IV < III < II D)II < III < I < IV

Quizplus · Accepted Answer

The boiling point of a compound increases with increasing molecular weight, increased intermolecular forces (such as hydrogen bonding) and decreased branching. Based on these factors, we can arrange the given compounds in order of increasing boiling point as follows:
II (molecular weight = 124, no hydrogen bonding or branching)
III (molecular weight = 270, has hydrogen bonding)
IV (molecular weight = 302, has hydrogen bonding and no branching)
I (molecular weight = 332, has hydrogen bonding and branching) 
Therefore, the correct order is II < III < IV < I.

Arrange the Following in Order of Increasing Boiling Point