The dielectric constant of H₂O is 80. The electrostatic force of attraction between Na⁺ and Cl^- will be :

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reduced to 1/80 in water than in air

reduced to 1/40 in water than in air

will be increased to 80 in water than in air

will remain unchanged

answer is A.

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Detailed Solution

Water is a polar solvent and have dielectric constant 80. As NaCl is a polar compound and like dissolves like so, forces of attraction between Na⁺ and Cl⁻ ion will reduce to 1/80 in water.

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