Multiple Choice
Which of the following compounds is a nonelectrolyte?
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6. Chemical Quantities & Aqueous Reactions
Electrolytes
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Which of the following substances is a weak electrolyte in aqueous solution?
A
NaCl
B
KNO3
C
HCl
D
CH3COOH
Verified step by step guidance1
Understand what an electrolyte is: an electrolyte is a substance that dissociates into ions when dissolved in water, allowing the solution to conduct electricity.
Recognize the difference between strong and weak electrolytes: strong electrolytes dissociate completely into ions, while weak electrolytes only partially dissociate in solution.
Analyze each substance: NaCl and KNO3 are ionic compounds that dissociate completely in water, making them strong electrolytes.
HCl is a strong acid that also dissociates completely in aqueous solution, so it is a strong electrolyte.
CH3COOH (acetic acid) is a weak acid that only partially ionizes in water, making it a weak electrolyte.
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