Multiple Choice
Under which condition do ionic compounds conduct electricity?
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6. Chemical Quantities & Aqueous Reactions
Electrolytes
Multiple Choice
Which statement best describes NaCl(aq) in terms of its behavior as an electrolyte?
A
NaCl(aq) is a non-electrolyte because it does not produce ions in solution.
B
NaCl(aq) is a weak electrolyte because it partially dissociates in water.
C
NaCl(aq) is a strong electrolyte because it does not dissociate in water.
D
NaCl(aq) is a strong electrolyte because it completely dissociates into Na^+ and Cl^- ions in water.
Verified step by step guidance1
Understand what an electrolyte is: an electrolyte is a substance that produces ions when dissolved in water, allowing the solution to conduct electricity.
Recognize that NaCl (sodium chloride) is an ionic compound composed of Na^+ and Cl^- ions held together by ionic bonds in the solid state.
When NaCl dissolves in water, it dissociates completely into its constituent ions: \(\mathrm{NaCl (s) \rightarrow Na^{+} (aq) + Cl^{-} (aq)}\).
Since NaCl dissociates fully into ions, it increases the concentration of ions in solution significantly, which means it conducts electricity very well.
Therefore, NaCl(aq) is classified as a strong electrolyte because it completely dissociates into ions in aqueous solution.
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