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Alkenes and Physical Properties of Alkenes

Alkenes

 

Alkenes are the simplest unsaturated hydrocarbons which react with hydrogen. Alkene contains single or multiple double bonds between carbon atoms, which is indicated by = symbol. The change of ending from indicates the change of a single bond to double bond -ane to -ene. Alkenes have the general formula CnH2n.

Alkene contains single or multiple double bonds between carbon-carbon atoms; this double bond differs the physical properties of alkenes from others.

Physical properties

1. At the room, temperature alkenes exist in all three states, solid, liquid, and gas. Alkenes having less than five carbon atoms are colorless gases, more than four and less than 15 carbon atoms are liquid, and 15 or more carbon atoms are solids.

2. The boiling point of alkenes increases with the increase in molecular mass, i.e., increase in the chain length.

3. The intermolecular force increases with an increase in the size of molecules.

4. The alkene is nonpolar, so they don’t dissolve in a polar solvent like water. They are soluble in nonpolar solvent only.

5. It shows weak dipole-dipole interactions.

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