Hydrocarbons: Alkanes and Alkenes

What is the general formula for alkanes?

• CnH2n-2

• CnH2n+3

• CnH2n

• CnH2n+2

How do alkanes differ from alkenes in terms of their chemical structure?

• Alkenes have only single bonds between carbon atoms.

• Alkanes have triple bonds between carbon atoms.

• Alkanes have cyclic structures.

• Alkanes have only single bonds between carbon atoms, whereas alkenes have at least one double bond between carbon atoms.

Give an example of a simple alkane.

• Ethane

• Butane

• Propane

• Methane

What is the double bond characteristic of alkenes?

• Oxygen-oxygen double bond

• Hydrogen-hydrogen double bond

• Nitrogen-nitrogen double bond

• Carbon-carbon double bond

Explain the process of combustion of alkanes.

• Combustion of alkanes involves mixing the alkane with water instead of oxygen.

• Combustion of alkanes occurs without the need for heat.

• Combustion of alkanes produces only carbon monoxide and hydrogen gas.

• The process of combustion of alkanes involves reacting the alkane with oxygen in the presence of heat to produce carbon dioxide and water.