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Haloalkanes And Haloarenes

Question
CBSEENCH12007966

Account for the following observation:
Haloalkanes are denser than the corresponding hydrocarbons.

Solution

Haloalkane are denser than that of corresponding alkane because density increase with increasing the mass. As the halogen attached to the alkane the mass of the compound increases. Thus, halo alkanes are denser than corresponding alkane.