Question detail
In chromatography, why is it important that the mobile phase moves through the stationary phase?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Purity, formulations and chromatography
Question
In chromatography, why is it important that the mobile phase moves through the stationary phase?
Answer
A high-scoring answer should explain explain that chromatography involves a stationary phase and a mobile phase. Use evidence before identification: name the relevant test or measurement, state the observation, and then connect the result to Chromatography.
Explanation
The important distinction is that chromatography must be identified from spot and solvent-front distances; answers that swap in a different test or result do not match Chromatography. A complete answer should use the approved objective wording, include the relevant evidence, and avoid unsupported identification claims.
Common mistake
Confusing Phases in Chromatography
Students often confuse the stationary phase with the mobile phase in chromatography.
Correct this by using the approved Chromatography context: Explain that chromatography involves a stationary phase and a mobile phase. Name the correct test or chemistry idea, state the observation accurately, and then give the conclusion supported by that evidence. Do not swap gas tests, flame tests, cation tests, anion tests, chromatography terms, pure substances, and formulations.
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