Chemistry – Experimental techniques and chemical analysis - Chromatography | e-Consult
Experimental techniques and chemical analysis - Chromatography (1 questions)
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Answer:
Answer: Sample X is impure.
Explanation: A pure substance will only consist of one component. Therefore, a pure substance will produce a single spot on the chromatogram. In this case, Sample X produces a single spot with an Rf value of 0.85. However, Sample Y produces a single spot with an Rf value of 0.92. This indicates that Sample X contains multiple components, and therefore is impure. If Sample X were pure, it would have produced only one spot.