A student runs a TLC plate of a mixture of four compounds. The TLC plate is shown below. How could the student improve the TLC plate (i.e. how could the student improve the separation of the compounds)?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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A student runs a TLC plate of a mixture of four compounds. The TLC plate is shown below. How could the student improve the
TLC plate (i.e. how could the student improve the separation of the compounds)?
a
b
с
d
e
Spot more sample onto the plate.
5:1 petroleum ether: diethyl ether
Use only petroleum ether as the eluant.
Change the eluant to a 10:1 mixture of petroleum ether to diethyl ether
Change the eluant to a 3:1 mixture of petroleum ether to diethyl ether
Spot less sample onto the plate.
Transcribed Image Text:A student runs a TLC plate of a mixture of four compounds. The TLC plate is shown below. How could the student improve the TLC plate (i.e. how could the student improve the separation of the compounds)? a b с d e Spot more sample onto the plate. 5:1 petroleum ether: diethyl ether Use only petroleum ether as the eluant. Change the eluant to a 10:1 mixture of petroleum ether to diethyl ether Change the eluant to a 3:1 mixture of petroleum ether to diethyl ether Spot less sample onto the plate.
A mixture of the following four compounds was spotted onto a silica gel
TLC plate and the plate was developed using petroluem ether eluant.
What molecule (1-4) matches letter C on the TLC plate?
a
b
с
1
2
3
d 4
2
3
Transcribed Image Text:A mixture of the following four compounds was spotted onto a silica gel TLC plate and the plate was developed using petroluem ether eluant. What molecule (1-4) matches letter C on the TLC plate? a b с 1 2 3 d 4 2 3
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