Question detail
Define reduction in terms of oxidation states.
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
Define reduction in terms of oxidation states.
Answer
Reduction is defined as a decrease in oxidation state of an element during a chemical reaction.
Explanation
This answer is strong because it directly addresses the definition of reduction as specified in the learning objective. It tests the student's understanding of oxidation states and their changes during redox reactions.
Common mistake
Misunderstanding Reduction
Students often confuse reduction with an increase in oxidation state instead of a decrease.
Reduction is defined as a decrease in oxidation state. To clarify, remember that when an element gains electrons, its oxidation state decreases. For example, in the reaction where Fe^3+ gains an electron to become Fe^2+, the oxidation state decreases from +3 to +2, confirming that reduction has occurred.
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