Physical Properties of Diethyl Ether Preparation and Properties

Physical Properties of Diethyl Ether Preparation and Properties

  • It is a colourless liquid with a pleasant smell.
  • It is highly volatile and inflammable liquid.
  • It is lighter than water and insoluble in it.
  • It is completely miscible in organic solvents like alcohol, benzene etc.
  • It is used as an anaesthetic.
  • Bailing point of diethyi ether is 307.6 K.
  • Structure of Diethyl Ether : Oxygen atom is sp3 hybridised in ether molecule.

→ Two sp3 hybrid orbitais of the oxygen atom overlap with sp3 hybrid orbitais of two ethyl groups forming o-bond. The remaining two sp3 hybrid orbitals contain a lone pair of electrons.

Physical Properties of Diethyl Ether Preparation and Properties

→ In this way two bond pair and two lone pair surround the oxygen in tetrahedral form. But C—O—C bond angle is 1100 instead of 109° 28’. This is due to repulsion between alkyl groups.

→ As the size of alkyl group increases bond angle also increases due to greater repulsive interactions.

→ Thus, ethers have angular structure and dipole moment is 1.3 D.

Physical Properties of Diethyl Ether Preparation and Properties 1

Chemistry Notes

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