Question

Solid NACL (common salt chlorine) does not conduct electricity but when dissolved in water it conducts electricity it conducts electricity.Why ??? For class 8

Answer 1

Question :-

Solid NaCl does not conduct electricity . But when water is added to it , it conducts electricity . Why ?

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Answer :-

➡ Solid NaCl is only a molecule and does not consist of any free ions.

➡We know that free ions are responsible for conduction of electricity.

➡Solid NaCl hence cannot conduct electricity .

➡When water is added to NaCl , water breaks the dielectric constant of NaCl .

➡This results in the formation of free ions .

NaCl =======> Na⁺ + Cl⁻

➡These free ions are responsible for electric flow of current.

➡Hence solid NaCl cannot conduct however aqueous solution state of NaCl can conduct electricity.

Hope it helps u :-)

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