Question detail
In the electrolysis of molten lead(II) bromide, write the half equation for the reaction occurring at the cathode.
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
In the electrolysis of molten lead(II) bromide, write the half equation for the reaction occurring at the cathode.
Answer
The half equation for the reaction at the cathode is: Pb^2+ + 2e^- → Pb. This shows that lead ions gain electrons to form lead metal.
Explanation
This question tests the student's understanding of half equations in electrolysis, specifically focusing on the reduction process at the cathode. It requires knowledge of ion discharge and electron transfer.
Common mistake
Common Mistake in Balancing Half Equations
Students often forget to balance the charge in half equations, leading to incorrect representations of the reactions.
Always check that the total charge on both sides of the half equation is equal, adjusting the number of electrons as necessary.
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