A compound that dissolves in water to form an aqueous solution that is an excellent conductor of electricity is always present in the solution as

-covalent molecules
-acid molecule
-base molecule
-salt molecules
-ions

When in solution, it is present as ions.

The compound that dissolves in water to form an aqueous solution that is an excellent conductor of electricity is always present in the solution as ions.

The compound that dissolves in water to form an aqueous solution that is an excellent conductor of electricity is always present in the solution as ions.

To understand why, let's break it down step by step:

1. When a compound dissolves in water, the water molecules surround the individual particles of the compound and separate them from each other. This process is known as hydration or solvation.

2. In some cases, when a compound dissolves in water, it undergoes a chemical reaction that results in the formation of ions. Ions are charged particles that have either gained or lost electrons. In an aqueous solution, these ions are dispersed throughout the water.

3. An excellent conductor of electricity requires the presence of charged particles that can move freely within the solution. Since ions are charged particles, they can conduct electricity by allowing the flow of electric current.

4. On the other hand, covalent molecules generally do not dissociate into charged particles when they dissolve in water. While some covalent compounds may form weak acids or bases that can partially dissociate to form ions, they are not as efficient at conducting electricity as compounds that form fully dissociated ions.

5. Similarly, pure acid or base molecules may be able to dissociate into ions in solution, but their conductivity is typically not as strong as that of salts or compounds that fully dissociate.

6. However, salts are compounds that consist of positive and negative ions held together by ionic bonds. When salts dissolve in water, the ionic bonds are broken, and the ions become dispersed in the solution, making it an excellent conductor of electricity.

Therefore, the compound that dissolves in water to form an aqueous solution that is an excellent conductor of electricity is always present as ions in the solution.