Why does an aqueous solution of an ionic substance conduct an electric current?

• A. Because water molecules themselves act as charge carriers.
• B. Because ionic substances release electrons directly into the solution.
• C. Because the dissolved ions are free to move and carry charge through the solution.
• D. Because the ionic substance forms covalent bonds with water, allowing current to flow.

Answer: (C)

Verified step by step guidance

1. Understand that electrical conductivity in a solution depends on the presence of charged particles that can move freely.
2. Recognize that ionic substances, when dissolved in water, dissociate into their constituent ions (cations and anions).
3. Recall that these ions are charged particles capable of moving through the solution under the influence of an electric field.
4. Note that water molecules themselves are neutral and do not carry charge, so they do not conduct electricity by themselves.
5. Conclude that the movement of these free ions in the aqueous solution allows the solution to conduct an electric current.