State physical properties of alkanes. - Vidyadip

Question

State physical properties of alkanes.

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Answer

Alkanes are colourless and odourless.
At room temperature, the first four alkanes are gases, alkanes having 5 to 17 carbon atoms are liquids while the rest all are solids.
Alkanes are readily soluble in organic solvents such as chloroform, ether or ethanol while they are insoluble in water.
Alkanes have low melting and boiling points which increases with an increase in the number of carbon atoms for straight chain molecules. But for branched chain molecules, more the number of branches, lower is the boiling/melting point.

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