Question

explain why a salt doesn't conduct electricity in solid state but becomes a good conductor in molten state?

Answer 1

Answer:

The ions of salt in a solid state are bonded with strong inter-particle forces. Hence, they are not free to move in solid-state and cannot conduct electricity. However, when this salt melts, its constituent ions get separated from each other. Thus, they are free to move across the melted salt and conduct electricity

Answer 2

Answer:

An aqueous solution of salt conducts electricity because it contains a large number of free ions capable of conducting electric currents.

Explanation:

• In a solid-state, salt ions are held together by strong inter-particle electrostatic forces.
• As a result, they can't move freely in their solid form and can't conduct electricity.
• When this salt dissolves,  the crystal structure of the solid compound breaks, and the constituent ions are separated from one another.
• As a result, they have unrestricted movement across the dissolved salt and are able to conduct electricity.
• Therefore, an aqueous solution of a salt conducts electricity because it contains a large number of free ions capable of conducting electric currents.

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