Answer:
- The electrical conductivity of a pure compound depends on whether it is an electrical conductor or an insulator. Electrical conductors allow the flow of electrons, while insulators do not. Here are the electrical conductivity properties of the pure compounds you listed
- Sodium chloride: Sodium chloride is an ionic compound and a good electrical conductor in the molten state or when dissolved in water. However, it is an insulator in the solid state.
- Sugar: Sugar is an organic compound and an insulator.
- Carbon dioxide: Carbon dioxide is a covalent compound and an insulator.
- Naphthalene: Naphthalene is an organic compound and an insulator.
- Potassium iodide: Potassium iodide is an ionic compound and a good electrical conductor in the molten state or when dissolved in water. However, it is an insulator in the solid state.
- Magnesium oxide: Magnesium oxide is an ionic compound and a good electrical conductor in the molten state or when dissolved in water. However, it is an insulator in the solid state.
2). When these compounds are dissolved in water, their electrical conductivity can change due to the presence of ions that can move and carry electric charge. Here are the electrical conductivity properties of the solutions of the compounds you listed:
- Sodium chloride: Sodium chloride dissolves in water to form an electrolytic solution that conducts electricity.
- Sugar: Sugar does not dissociate into ions when dissolved in water, so it does not conduct electricity.
- Carbon dioxide: Carbon dioxide does not dissociate into ions when dissolved in water, so it does not conduct electricity.
- Naphthalene: Naphthalene does not dissociate into ions when dissolved in water, so it does not conduct electricity.
- Potassium iodide: Potassium iodide dissolves in water to form an electrolytic solution that conducts electricity.
- Magnesium oxide: Magnesium oxide is not soluble in water, so it does not conduct electricity when dissolved.