Question

Which of the following represents a hydrocarbon that contains one double bond somewhere in the carbon chain?

alkane
alkene
alkyne
substituted hydrocarbon

I know it's not C, alkyne

Answer 1

An alkene is a hydrocarbon with one or more carbon-carbon double covalent bonds, and is the correct answer to the question.

Step-by-step explanation:

An alkene is a hydrocarbon with one or more carbon-carbon double covalent bonds. Alkenes have the general formula CnH2n assuming non-cyclic structures. They can be represented by the formula RCH=CHR', where R and R' are any atoms or groups of atoms attached to the carbons.

An alkyne is a hydrocarbon with one or more carbon-carbon triple covalent bonds. Alkynes have the general formula CnH2n-2, and can be represented by the formula RC≡CR', where R and R' are any atoms or groups of atoms attached to the carbons.

Based on these definitions, the hydrocarbon that contains one double bond somewhere in the carbon chain is an alkene.

Answer 2

The answer is alkene.

An alkane is a saturated hydrocarbon, thi is it has only single bonds.

Alkenes and alkynes are unsaturated: alkenes have double bonds and alkynes have triple bonds.

Subsituted hydrocarbon, is a hydrocarbon with one hydrogen substituted by another element or a group.

For example:

CH3 - CH - CH3
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F