Question detail
In the reaction between zinc and hydrochloric acid, zinc is oxidised. Write the half equation for the oxidation process.
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
In the reaction between zinc and hydrochloric acid, zinc is oxidised. Write the half equation for the oxidation process.
Answer
Zn → Zn²⁺ + 2e⁻
Explanation
This answer is strong because it correctly represents the oxidation of zinc, showing the loss of electrons and the formation of zinc ions. The question tests the student's ability to write half equations for oxidation processes.
Common mistake
Misidentifying Oxidation and Reduction
Students often confuse oxidation with reduction, thinking that both involve an increase in oxidation state.
Remember that oxidation is defined as an increase in oxidation state, while reduction is a decrease. For example, in the reaction of zinc with copper sulfate, zinc is oxidized (its oxidation state increases from 0 to +2) and copper is reduced (its oxidation state decreases from +2 to 0).
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