Liquids that conduct electricity are typically solutions containing:

Correct Option

The correct option is

Acids, Bases, and Salts

Explanation

Electrical conductivity in liquids, specifically solutions, depends on the presence of free-moving charge carriers. Unlike solids (metals) where conduction is due to the flow of free electrons, conduction in solutions (electrolytes) is primarily due to the movement of ions (cations and anions).

Detailed Analysis

• Nature of Conductivity in Solutions: For a solution to conduct electricity, the solute must dissociate into ions when dissolved in a solvent (typically water). These ions migrate towards oppositely charged electrodes when a potential difference is applied, constituting an electric current.
• Acids, Bases, and Salts:
  • Acids: When dissolved in water, acids release hydrogen ions (H⁺) along with corresponding anions (e.g., HCl dissociates into H⁺ and Cl^-).
  • Bases: Bases dissociate to yield hydroxide ions (OH^-) and cations (e.g., NaOH dissociates into Na⁺ and OH^-).
  • Salts: Salts are ionic compounds that dissociate completely into positive and negative ions in aqueous solutions (e.g., NaCl dissociates into Na⁺ and Cl^-).
  Since all three categories produce free ions in solution, they enable the liquid to conduct electricity.
• Comparison with Other Options:
  • Elements and Mixtures: While liquid metals (elements like mercury) conduct electricity, most liquid mixtures (e.g., oil in water) do not unless they contain ions. Therefore, this category is too broad and not specific to electrolytic solutions.
  • Metals, Non-metals, and Metalloids: This classification generally applies to solid elements. While metals conduct, non-metals (mostly) do not. Furthermore, the question specifically refers to "solutions containing," which implies a solute-solvent system rather than elemental conductors.
  • Inert Gases: These are chemically unreactive and do not form ions or conduct electricity under standard conditions.

Key Takeaway: Liquids that conduct electricity are known as electrolytes. This property arises from the dissociation of acids, bases, and salts into free-moving ions, which act as charge carriers in the solution.