Question detail
For Electrolysis of aqueous solutions, which acid-base focus answer best supports this Unit 4.4 objective: Describe that aqueous solutions contain ions from the ionic compound and hydrogen ions and hydroxide ions from water?
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. They are discharged at the anode - correct acid-base focus for hydrogen
- B. Wrong acid-base focus: confuses hydrogen 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 Describe that aqueous solutions contain ions from the ionic compound and hydrogen ions and hydroxide ions from water
Answer
The correct option is They are discharged at the anode - correct acid-base focus for hydrogen.
Explanation
The correct option is "They are discharged at the anode - correct acid-base focus for hydrogen" because it supports the approved learning objective: Describe that aqueous solutions contain ions from the ionic compound and hydrogen ions and hydroxide ions from water. 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
Confusing Ions in Aqueous Solutions
Students often forget that aqueous solutions contain not only ions from the ionic compound but also hydrogen ions and hydroxide ions from water.
To fix this, remember to include all types of ions present in the solution when describing aqueous electrolysis, specifically noting the contribution of water.
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