Which of the following substances is classified as an electrolyte?

• A. CCl4 (carbon tetrachloride) in liquid form
• B. C6H12O6 (glucose) dissolved in water
• C. CH3OH (methanol) dissolved in water
• D. NaCl (sodium chloride) dissolved in water

Answer: (D)

Verified step by step guidance

1. Understand that an electrolyte is a substance that produces ions when dissolved in water, allowing the solution to conduct electricity.
2. Analyze each substance to determine if it ionizes or dissociates into ions in aqueous solution:
3. CCl4 (carbon tetrachloride) is a nonpolar molecular compound and does not ionize in water, so it is not an electrolyte.
4. C6H12O6 (glucose) and CH3OH (methanol) are molecular compounds that dissolve in water but do not produce ions; they are nonelectrolytes.
5. NaCl (sodium chloride) is an ionic compound that dissociates completely into Na⁺ and Cl⁻ ions in water, making it a strong electrolyte.