Question detail
What is the purpose of filtration in the preparation of a soluble salt from an acid and an insoluble solid?
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 the purpose of filtration in the preparation of a soluble salt from an acid and an insoluble solid?
Answer
Filtration is used to separate the unreacted insoluble solid from the solution containing the soluble salt. This ensures that only the desired product remains in the solution.
Explanation
This question assesses the student's knowledge of the practical techniques used in chemistry, specifically in the preparation of soluble salts. The answer explains the function of filtration in the process, reinforcing the understanding of separation techniques.
Common mistake
Excess Solid Misunderstanding
Students often think that adding an insoluble solid in excess is to ensure all the acid reacts, rather than to ensure that the solution is saturated and all the acid is neutralised.
Emphasize that the excess solid ensures that any unreacted acid is neutralised, and the remaining solid can be filtered out, leaving a pure salt solution.
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