Multiple Choice
Which term best describes a chemical substance that separates into ions in solution and helps cells conduct electrical signals necessary for proper function?
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6. Chemical Quantities & Aqueous Reactions
Electrolytes
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Which of the following substances is classified as a strong electrolyte?
A
CH_3OH (aq)
B
C_6H_{12}O_6 (aq)
C
NaCl (aq)
D
H_2O (l)
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 substance to determine if it dissociates into ions in aqueous solution:
CH_3OH (methanol) is a molecular compound and does not ionize significantly in water, so it is a nonelectrolyte or very weak electrolyte.
C_6H_{12}O_6 (glucose) is also a molecular compound that dissolves but does not dissociate into ions, so it is a nonelectrolyte.
NaCl (sodium chloride) is an ionic compound that dissociates completely into Na^{+} and Cl^{-} ions in water, making it a strong electrolyte.
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