Question detail
What is meant by a weak acid in terms of its ionisation in aqueous solution?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Reactions of acids
Question
What is meant by a weak acid in terms of its ionisation in aqueous solution?
Answer
A weak acid is one that only partially ionises in aqueous solution, meaning that not all of the acid molecules dissociate into hydrogen ions (H+) and conjugate base ions. This results in a lower concentration of hydrogen ions compared to a strong acid of the same concentration.
Explanation
This answer demonstrates an understanding of the concept of weak acids and their behavior in solution, which is crucial for distinguishing between strong and weak acids. The question tests the student's ability to recall and explain the definition of weak acids.
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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