Question detail
Explain why a molten ionic compound can conduct electricity during electrolysis.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Electrolysis
Question
Explain why a molten ionic compound can conduct electricity during electrolysis.
Answer
A molten ionic compound can conduct electricity because it contains free-moving ions that are able to carry charge. When the ionic compound is melted, the ions are released from their fixed positions in the lattice structure, allowing them to move freely.
Explanation
This answer is strong as it explains the reason behind the conductivity of molten ionic compounds, linking it to the presence of free-moving ions. It tests the student's ability to connect the physical state of the compound with its electrical properties.
Common mistake
Metal Formation at the Cathode
Students often think that a metal is always produced at the cathode, regardless of the ionic compound being electrolysed.
Students should remember that a metal forms at the cathode only when a molten ionic compound is electrolysed, and they should consider the specific ions present in the compound.
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