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Consider the following statements regarding water: 1. Water is an polar molecule 2. Water molecules align themselves in an electric field 3. Water molecules vary their alignment if the applied electric polarity changes with time  4. Water molecules align themselves in an magnetic field Which of the above statements are correct?

Consider the following statements regarding water: 1. Water is an polar molecule 2. Water molecules align themselves in an electric field 3. Water molecules vary their alignment if the applied electric polarity changes with time  4. Water molecules align themselves in an magnetic field Which of the above statements are correct? Correct Answer 1, 2 and 3 only

  • Water (H2O) is classified as a polar molecule because of it's polar covalent bond and bent shape.
  • The bent shape means most of the negative charge from the oxygen atom on one side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule.
  • This is an example of polar covalent chemical bonding.
  • When solutes are added to water, they may be affected by the charge distribution.
  • In an applied electric field, polar molecules i.e. water molecules tend to align themselves with the electric field.
  • On reversing the polarity, the polar molecules changes their orientation. So that water molecules vary their alignment if the applied electric polarity changes with time.
  • Magnetic field has no effect on water molecules.

Note:

Water is a polar molecule and also acts as a polar solvent. When a chemical species is said to be "polar," this means that the positive and negative electrical charges are unevenly distributed. The positive charge comes from the atomic nucleus, while the electrons supply the negative charge. It is the movement of electrons that determines polarity.

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