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Chemistry · EQUILIBRIUM

हिन्दी

When solid sodium chloride is dissolved in water, the electrostatic force of attraction between \( \text{Na}^+ \) and \( \text{Cl}^- \) ions is reduced by a factor of 80 because:

  1. Water has a high dielectric constant of 80.
  2. The size of hydrated sodium ion becomes equal to chloride ion.
  3. Water acts as a strong electrolyte and ionizes completely.
  4. Water undergoes auto-ionization to produce hydronium ions.

Correct answer · Option 1

Water has a high dielectric constant of 80.

Explanation

Electrostatic interaction forces between two charges are inversely proportional to the dielectric constant of the medium; for water, this value is 80.
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