What type of solutions can conduct electricity?

Ionic solutions or molten ionic compounds are capable of conducting electricity due to the presence of charged particles, specifically ions, that are free to move. In an ionic solution, when a compound dissolves in water, it dissociates into its constituent ions. These ions are charged and can move freely throughout the solution, allowing them to carry electrical current.

Similarly, molten ionic compounds, when heated to a temperature where they become liquid, also allow the ions to move freely. The mobility of these ions is crucial for electrical conductivity. In contrast, pure water contains very few ions; while it can conduct some electricity, it is not a good conductor because it lacks a significant concentration of charged particles. Strong acids can also conduct electricity due to their dissociated ions, but they are a subset of ionic solutions. Non-soluble compounds do not dissociate into ions in solution and therefore do not conduct electricity. Thus, ionic solutions and molten ionic compounds are the correct types of solutions that can effectively conduct electricity.