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ID: 540751 • Letter: R
Question
Read the question thoroughly and carely, and provide a complete, correct answer to the problem. Thanks.
1. A standard sample of compound A was placed on a silica TLC plate. After elution in 30/70 ethyl acetate/hexane, the sample showed a single spot at 3.4 cm (relative to the initial point) after the solvent had risen to 7.1 cm (relative to the initial point). A sample which was thought to contain this compound was analyzed by TLC and showed two spots after elution in the same solvent system The solvent height for this plate was 6.5 cm (relative to the initial point) and the spots were located at 3.6 cm and 5.2 cm (relative to the initial point. Can either of these spots possibly be compound A? Explain.Explanation / Answer
Answer: compound A has some impurity. in two spots one is compound A and another one is impurity related to compoundA
explain: for first illution of TLC plate, there is observed only one spot is there but after 2nd illution, there is observed two spots onTLC plate.thatmeans in first illution, two spots are merged one with another one so two spots are different compounds.
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