Question

Classify into alkens alkenes and alkynes

Answer 1

Alkanes, Alkenes & Alkynes

 

            Alkanes, alkenes and alkynes are simple hydrocarbon chains with no functional groups.  Alkanes are identified because the carbon chain has only single bonds.  Common alkanes include methane (natural gas), propane (heating and cooking fuel), butane (lighter fluid) and octane (automobile fuel).  Alkenes have at least one double bond and alkynes have at least one triple bond.  The most common alkyne is ethyne, better known as acetylene.  The generic formula for alkanes is CnH2n+2, where n is the number identified by the prefix.  Alkenes have the formula CnH2n and alkynes use the formula CnH2n-2.

 

Writing the formulas for simple alkanes, alkenes and alkynes is as simple as determining how many carbons are in the formula and then putting that number into the generic formula for that hydrocarbon.  Since alkanes do not have any real parts to identify, unlike all other organic molecules, there is no need to number the carbons.

Answer 2

Alkane = Single Bond ⇒ Saturated Compound

Alkene = Double Bond ⇒ Unsaturated Compound

Alkyne = Triple Bond ⇒ Unsaturated Compound