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Question

Why pure water is not a strong electrolyte?


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Solution

Water:

  • Water (H2O) is an inorganic, transparent, tasteless, odorless, and almost colorless chemical substance
  • It is the major ingredient of the Earth's hydrosphere as well as the fluids of all known living species (in which it acts as a solvent).

Electrolyte:

  • An electrolyte is a material containing ions that conducts electricity by ion movement but not electrons.
  • Most soluble salts, acids, and bases dissolved in a polar solvent, such as water, fall into this category.

Pure water as a weak electrolyte:

  • Pure water molecules do not have enough ions to transmit electrons from one end to the other.
  • Pure water is a poor electrolyte due to this feature.
  • To be a powerful electrolyte, it must ionize into its constituent ions, however pure water only barely ionizes into its ions, making it a weak electrolyte.
  • As a result of the strong hydrogen bonding, pure water is not a powerful electrolyte.

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