In Demonstrations of Strong and Weak Electrolytes and Nonelectrolytes, a Lightbulb

question 55

Multiple Choice

In demonstrations of strong and weak electrolytes and nonelectrolytes, a lightbulb apparatus that shows how much a solution conducts electricity by the brightness of the light is often used.When pure water is tested, the bulb does not light.Which of the following aqueous solutions causes the bulb to burn dimly but not brightly?

• A)table salt, NaCl
• B)isopropyl alcohol, C₃H₇OH
• C)fructose, C₆H₁₂O₆
• D)methanol, CH₃OH
• E)acetic acid, CH₃COOH

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