Question detail
For Electrolysis of aqueous solutions, which redox focus answer best supports this Unit 4.4 objective: Make and test predictions about products formed during electrolysis of aqueous solutions. (WS 2.2)?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Electrolysis
Question
- A. To allow the ions to move freely - correct redox focus for WS 2.2
- B. Wrong redox focus: confuses WS 2.2 with a nearby Unit 4.4 chemical change idea
- C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for Electrolysis of aqueous solutions
- D. Wrong reaction link: does not support Make and test predictions about products formed during electrolysis of aqueous solutions. (WS 2.2)
Answer
The correct option is To allow the ions to move freely - correct redox focus for WS 2.2.
Explanation
The correct option is "To allow the ions to move freely - correct redox focus for WS 2.2" because it supports the approved learning objective: Make and test predictions about products formed during electrolysis of aqueous solutions. (WS 2.2). The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Electrolysis of aqueous solutions.
Common mistake
Misunderstanding Electrolysis Products
Students often predict that the metal will always be produced at the cathode during electrolysis of aqueous solutions, regardless of the metal's reactivity compared to hydrogen.
Students should remember that if the metal is more reactive than hydrogen, hydrogen will be produced at the cathode instead. It's important to refer to the reactivity series when making predictions.
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