Multiple Choice
Which statement best describes NaCl(aq) in terms of its behavior as an electrolyte?
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6. Chemical Quantities & Aqueous Reactions
Electrolytes
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Which of the following compounds is a strong electrolyte?
A
NaCl
B
CH3OH
C
NH3
D
C6H12O6
Verified step by step guidance1
Understand what a strong electrolyte is: a substance that completely dissociates into ions when dissolved in water, allowing the solution to conduct electricity very well.
Examine each compound to determine if it dissociates into ions in aqueous solution:
NaCl is an ionic compound composed of Na⁺ and Cl⁻ ions, which dissociates completely in water, making it a strong electrolyte.
CH3OH (methanol), NH3 (ammonia), and C6H12O6 (glucose) are molecular compounds that do not dissociate into ions significantly; they mostly remain as neutral molecules in solution, so they are nonelectrolytes or weak electrolytes.
Therefore, identify NaCl as the strong electrolyte because it fully ionizes in water, unlike the other compounds listed.
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