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TLC analysis of an unknown sample using pure ethyl acetate as a developing solvent gives a...

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Chemistry

TLC analysis of an unknown sample using pure ethyl acetate as adeveloping solvent gives a single spot with an Rf value of0.08.

A. Explain why this result doesn't guarantee that the sample isa pure compound.

B. Suggest two changes that could be made to the experiment toimprove the analysis of the unkonwn sample.

Answer & Explanation Solved by verified expert
3.9 Ratings (452 Votes)
A A single spot does not necessarily indicate the purity of the compound A single substance gives a single spot no matter which solvent is used to develop the plate However in mixtures it may be possible to have a single spot if the appropriate solvent to separate the components of the mixture is not used    See Answer
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