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Question

Potassium chloride conducts electricity in _______ state.


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Solution

Molten state of potassium chloride:

  • The melting process frees the ions in potassium chloride from their fixed positions in the crystal lattice.
  • Since these ions can move freely under the influence of an electric field, they can conduct electricity.
  • Solid ionic compounds do not conduct electricity because the ions are held firmly in place.
  • The ions cannot move to conduct the electric current.
  • K+ and Cl ions become fully dissociated in the water, where the mobile ions can freely drift under an electrical field’s influence.
  • Hence, the movement of ions takes place only in the molten state.

Therefore, potassium chloride conducts electricity in a molten state.


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