As listed before, alkenes room hydrocarbons v carbon-to-carbon dual bonds (R2C=CR2) and also alkynes room hydrocarbons v carbon-to-carbon triple bond (R–C≡C–R). Collectively, lock are dubbed unsaturated hydrocarbons since they have actually fewer hydrogen atoms 보다 does an alkane with the same number of carbon atoms, together is suggested in the complying with general formulas:

api/deki/files/27185/CH2%253DCH2.jpg?revision=1" />

The double bond is shared by the two carbons and does no involve the hydrogen atoms, although the condensed formula does no make this point obvious. Note that the molecular formula for ethene is C2H4, whereas the for ethane is C2H6.

You are watching: Which of the following compounds is an unsaturated hydrocarbon?

The very first two alkenes in Table \(\PageIndex1\), ethene and also propene, are most often referred to as by their typical names—ethylene and also propylene, respectively (Figure \(\PageIndex1\)). Ethylene is a significant commercial brickandmortarphilly.comical. The united state brickandmortarphilly.comical market produces around 25 exchange rate kilograms of ethylene annually, much more than any other man-made organic brickandmortarphilly.comical. An ext than half of this ethylene goes into the manufacture of polyethylene, one of the most familiar plastics. Propylene is also an essential industrial brickandmortarphilly.comical. It is converted to plastics, isopropil alcohol, and a variety of various other products.


Example \(\PageIndex1\)

Name every compound.

Exercise \(\PageIndex1\)

Name every compound.

See more: In Which Of The Following Ways Can Green Computing Be Achieved?


api/deki/files/128165/clipboard_eed479396c5c92e696f229560689840e7.png?revision=1" />

Briefly determine the necessary distinctions between an alkene and an alkane.