Question detail
Write the half equation for the reduction of copper ions (Cu²⁺) to copper metal (Cu).
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Oxidation, reduction and redox equations
Question
Write the half equation for the reduction of copper ions (Cu²⁺) to copper metal (Cu).
Answer
Cu²⁺ + 2e⁻ → Cu
Explanation
This answer is strong as it accurately depicts the gain of electrons during the reduction process, which is essential in understanding redox reactions. The question assesses the student's ability to formulate half equations for reduction processes.
Common mistake
Oxidation State Confusion
Students often confuse oxidation with reduction, incorrectly stating that oxidation is a decrease in oxidation state.
Remember that oxidation is defined as an increase in oxidation state. For example, in the reaction of zinc with copper sulfate, zinc goes from an oxidation state of 0 to +2, indicating oxidation.
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