How does dissolving an ionic compound in water increase the electrical conductivity of the solution?

• A. The ionic compound dissociates into ions, which are free to move and carry electric current.
• B. The ionic compound forms neutral molecules that enhance electron flow.
• C. The ionic compound reacts with water to produce more water molecules, increasing conductivity.
• D. The ionic compound absorbs heat from water, allowing electrons to move faster.

Answer: (A)

Verified step by step guidance

1. Understand that electrical conductivity in a solution depends on the presence of charged particles, called ions, that can move freely and carry electric current.
2. Recognize that ionic compounds are made up of positive and negative ions held together by ionic bonds in a solid lattice structure.
3. When an ionic compound dissolves in water, the water molecules surround and separate the individual ions in a process called dissociation.
4. This dissociation releases free ions into the solution, increasing the number of charge carriers available to conduct electricity.
5. Therefore, the increase in electrical conductivity is due to the presence of these free-moving ions, not neutral molecules or changes in water quantity or temperature.