Question detail
For Strong and weak acids (HT only), which redox focus answer best supports this Unit 4.4 objective: (HT only) Describe a weak acid as only partially ionised in aqueous solution?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactions of acids
Question
- A. They produce fewer hydrogen ions than strong acids of the same concentration. - correct redox focus for HT only
- B. Wrong redox focus: confuses HT only with a nearby Unit 4.4 chemical change idea
- C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for Strong and weak acids (HT only)
- D. Wrong reaction link: does not support (HT only) Describe a weak acid as only partially ionised in aqueous solution
Answer
The correct option is They produce fewer hydrogen ions than strong acids of the same concentration. - correct redox focus for HT only.
Explanation
The correct option is "They produce fewer hydrogen ions than strong acids of the same concentration. - correct redox focus for HT only" because it supports the approved learning objective: (HT only) Describe a weak acid as only partially ionised in aqueous solution. The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Strong and weak acids (HT only).
Common mistake
Weak Acid Misconception
Students often think that weak acids do not ionise at all in solution.
Emphasize that weak acids do ionise, but only partially, meaning some molecules remain un-ionised in solution.
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