Which of the following solutions will have the highest electrical conductivity?

• A. 0.1 M C_6H_{12}O_6(aq) (glucose)
• B. 0.1 M NH_3(aq)
• C. 0.1 M CH_3COOH(aq)
• D. 0.1 M NaCl(aq)

Answer: (D)

Verified step by step guidance

1. Understand that electrical conductivity in aqueous solutions depends on the presence of ions, which carry electric current. The more ions present, the higher the conductivity.
2. Analyze each solution: 0.1 M C_6H_{12}O_6 (glucose) is a molecular compound that does not ionize in water, so it produces no ions and thus has very low conductivity.
3. 0.1 M NH_3 (ammonia) is a weak base that partially ionizes in water to produce some OH^- and NH_4^+ ions, so it has low to moderate conductivity.
4. 0.1 M CH_3COOH (acetic acid) is a weak acid that partially ionizes to produce CH_3COO^- and H^+ ions, resulting in low to moderate conductivity, but generally more ions than NH_3 due to acid dissociation.
5. 0.1 M NaCl is a strong electrolyte that completely dissociates into Na^+ and Cl^- ions, producing the highest concentration of ions and therefore the highest electrical conductivity among the given solutions.