Multiple Choice
When molten NaCl is electrolyzed, which products are formed at the cathode and anode, respectively?
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6. Chemical Quantities & Aqueous Reactions
Electrolytes
Multiple Choice
Which of the following aqueous solutions is the best conductor of an electrical current?
A
1 M NH3
B
1 M CH3COOH (acetic acid)
C
1 M C6H12O6 (glucose)
D
1 M NaCl
Verified step by step guidance1
Understand that electrical conductivity in aqueous solutions depends on the presence of ions that can move freely and carry charge.
Identify which substances ionize or dissociate in water: NaCl dissociates completely into Na\(\textsuperscript{+}\) and Cl\(\textsuperscript{-}\) ions, providing many charge carriers.
Recognize that NH3 is a weak base and only partially ionizes to produce OH\(\textsuperscript{-}\) and NH4\(\textsuperscript{+}\) ions, so it has fewer ions than NaCl.
Note that CH3COOH (acetic acid) is a weak acid and partially ionizes into CH3COO\(\textsuperscript{-}\) and H\(\textsuperscript{+}\) ions, resulting in fewer ions than a strong electrolyte like NaCl.
Understand that C6H12O6 (glucose) is a molecular compound that does not ionize in water, so it produces no ions and thus does not conduct electricity well.
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