Thin Layer Chromatography Exam Questions and Answers 100% Pass

Thin Layer Chromatography Exam
Questions and Answers 100% Pass


What does chromatography do? -

[ANSWER]: separates components in a mixture based on the

differences in their intermolecular interactions between a stationary

phase and a moving phase.




QUESTION: in chromatography, phases can be... -

[ANSWER]: various combinations of solid, liquid, or gas




QUESTION: in this course we learned these types of chromatography: -

[ANSWER]: thin layer chromatography (TLC) and gas chromatography

(GC)




QUESTION: thin layer chromatography (TLC) involves -

, [ANSWER]: solid stationary phase / liquid moving phase




QUESTION: gas chromatography (GC) involves -

[ANSWER]: solid stationary phase (like TLC) / gas moving phase

(unlike TLC)




QUESTION: in our TLC experiment, what was the solid that was thinly

coated on a plastic plate? -

[ANSWER]: silica




QUESTION: what is silica? -

[ANSWER]: it is a polar substance with many -OH (hydroxyl) groups.




QUESTION: in our TLC experiment, the moving phase is ... -

[ANSWER]: dichloromethane, aka methylene chloride (CH2Cl2)