Uses of Alkanes Alkenes and Alkynes

Uses of Alkanes Alkenes and Alkynes:

Uses of Alkanes:

The following are the uses of Alkanes-

  • Methane in form of natural gas is used for running scooters, cars, buses etc. L.P.G (a mixture of butane and isobutane) is used as a fuel in homes as well as in industry.
  • Methane is used to make carbon black which is used in the manufacture of printing inks, paints and automobile tyres.
  • Catalytic oxidation of alkanes gives alcohols, aldehydes and carboxylic acids.
  • Higher alkanes in form of gasoline, kerosene oil, diesel, lubricating oils and paraffin wax are widely used.
  • Methane is used for the manufacture of halogen-containing compounds such as CH2Cl2, CHCl3, CCl4 etc. are used as solvents both in laboratory and industry.

Uses of Alkenes:

The following are the uses of Alkenes-

  • Lower members of the family are used as fuels and illuminants.
  • Alkenes and substituted alkenes upon polymerization form a number of useful polymers such as Polythene, PVC, Teflon, Orlon etc.
  • Ethene is employed for the preparation of ethyl alcohol and ethylene glycol (anti-freeze).
  • Ethylene is used for artificial ripening of green fruits.
  • Ethylene is also used in oxygen-ethylene flame for cutting and welding of metals.

Uses of Alkynes:

The following are the uses of Alkynes-

  • Acetylene and its derivatives are widely used in synthetic organic chemistry for the synthesis of cis- and trans- alkenes, methyl ketones etc.
  • An oxyacetylene flame is used for cutting and welding of metals.
  • Acetylene is used as illuminant in hawker’s lamp and in lighthouses.
  • Acetylene is used for ripening of fruits and vegetables.
  • Acetylene is used for the manufacture of ethyl alcohol, acetaldehyde, acetic acid, vinyl plastics, synthetic rubbers such as Buna N and Synthetic fibres such as Orlon.

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