Question

What are some examples of Alkenes?

Answer 1

Hint : We know that Alkene compounds are naturally odourless and colourless. However, ethane is an exception. Even though it is a gas without colour, it holds a slightly sweet smell. Additionally, the first three compounds of this family of alkene are gaseous, but the next fourteen are liquid, and the remaining ones are solid.

Complete Step By Step Answer:
Alkenes are molecules containing a carbon-to-carbon double bond, $C=C.$ They form a family of molecules, a homologous series, with general formula CnH2n where n is the number of carbon atoms. Starting with the simplest, the members of the family are:
Ethene, ${{C}_{2}}{{H}_{4}}$ ; propene, ${{C}_{3}}{{H}_{6}}$ ; butene, ${{C}_{4}}{{H}_{8}}$. Actually there are two different molecules, isomers of each other, with the formula C4H8 so to be unambiguous we need to show how the atoms are arranged in each molecule, which we could do using the structural formula for each:
$but-1-ene,~C{{H}_{2}}=CHC{{H}_{2}}C{{H}_{3}}$ and $but-2-ene,~C{{H}_{3}}CH=CHC{{H}_{3}}.$ and so on with increasing numbers of carbon atoms.
In the natural world, alkenes are very common. Alkenes are referred to as 'unsaturated' and this is the origin of terms such as monounsaturates (containing one$C=C$) and polyunsaturates (containing more than one$C=C$) relating to oils and fats, for example.
Alkene has an array of applications in industries. Typically, they are used as starting materials to synthesise alcohols, lacquers, detergent, plastics, etc. Following are some important industrial applications of an alkene.

Note :
Remember that ethene is a vital organic feedstock in chemical industries. It is produced from crude oil and natural gas with the help of cracking. Moreover, ethene is used for the production of various chemical products like vinyl chloride, polyethylene, ethanol, styrene, acetaldehyde and several others.