Alkenes & Alkanes

A homologous series is a family of organic compounds with

• similar chemical properties and same general formula

• similar chemical properties and different general formula

• different chemical properties and same general formula

• similar physical properties and same general formula

A homologous series is a family of organic compounds with

• similar chemical properties and same general formula

• similar chemical properties and different general formula

• different chemical properties and same general formula

• similar physical properties and same general formula

Each member of a homologous series differs from the next by a

• –CH₂ group

• –CH group

• –CO₂ group

• –CH₄ group

Which of the following can be used to distinguish between alkanes and alkenes?

• add a few drops of aqueous bromine

• add a few drops of Universal indicator

• add a piece of blue litmus paper

• add a piece of red litmus paper

Which of the following statement is correct?

• Alkenes can turn aqueous bromine from reddish-brown to colourless.

• Alkenes can turn aqueous bromine from colourless to reddish-brown.

• Alkanes can turn aqueous bromine from reddish-brown to colourless.

• Alkanes can turn aqueous bromine from colourless to reddish-brown.

State the general formula for alkane

• C_nH_2n+2

• C_nH_2n

• C_nH_2n+1

• C_nH_2n-2

State the general formula for alkene

• C_nH_2n+2

• C_nH_2n

• C_nH_2n+1

• C_nH_2n-2

Which are the following are all alkanes?

• methane, ethane, propane

• methane, ethene, propene

• methene, ethene, propene

• ethene, propene, butene

Which are the following are all alkenes?

• methane, ethane, propane

• methane, ethene, propene

• methene, ethene, propene

• ethene, propene, butene

The formula for ethene is

• C₂H₄

• C₂H₆

• CH₄

• C₃H₆