Question

Salt is a good conductor of electricity when dissolved in water but does not conduct in its solid form. Why?

Answer 1

Explanation:

NaCl (common salt) is solid in state and solid ions or compounds don't conduct electricity. It needs to be either melted, molten or dissolved in a solution (i.e. water) first. This is because the electrons in a solid state won't be free to move to either the Cathode (-ve) or to the Anode (+ve).

Answer 2

Salt is good conductor of electricity in molten state or in aqueous form because of the presence of movable ion .But in solid form no drift electron as well as ion so current doesn't flow .