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Thin Layer Chromatography UPDATED ACTUAL Exam Questions and CORRECT Answers

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Institution Chromatography
Course Chromatography
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Thin Layer Chromatography UPDATED ACTUAL Exam Questions and CORRECT Answers

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Thin Layer Chromatography UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What does chromatography do? - CORRECT ANSWER - separates components in a
mixture based on the differences in their intermolecular interactions between a stationary phase
and a moving phase.


in chromatography, phases can be... - CORRECT ANSWER - various combinations of
solid, liquid, or gas


in this course we learned these types of chromatography: - CORRECT ANSWER - thin
layer chromatography (TLC) and gas chromatography (GC)


thin layer chromatography (TLC) involves - CORRECT ANSWER - solid stationary phase
/ liquid moving phase


gas chromatography (GC) involves - CORRECT ANSWER - solid stationary phase (like
TLC) / gas moving phase (unlike TLC)


in our TLC experiment, what was the solid that was thinly coated on a plastic plate? -
CORRECT ANSWER - silica



what is silica? - CORRECT ANSWER - it is a polar substance with many -OH (hydroxyl)
groups.


in our TLC experiment, the moving phase is ... - CORRECT ANSWER - dichloromethane,
aka methylene chloride (CH2Cl2)


what is dichloromethane, aka methylene chloride (CH2Cl2)? - CORRECT ANSWER -a
moderately polar solvent

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