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chemistry chromatography UPDATED Exam Questions and CORRECT Answers

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chemistry chromatography UPDATED Exam Questions and CORRECT Answers

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chemistry chromatography UPDATED
Exam Questions and CORRECT Answers
the time the substances stay in stationary phase depends on - CORRECT ANSWER - mass
of the solute


solubility in the mobile phase vs solubilility in liquid stationary phase


adsorption


what is the stationary phase in thin layer chromatography - CORRECT ANSWER - solid
silica gel plate on a glass plate


what is the mobile phase in thin layer chromatography - CORRECT ANSWER - organic
solvent i.e hexane


what are the limitation of thin layer chromatography - CORRECT ANSWER - - similar to
paper chromatography


why do we use a lid in thin layer chromatography - CORRECT ANSWER - avoid
evaporation


really polar molecules should have a small Rf


attracted to the plate - stationary phase


Formula for Rf value - CORRECT ANSWER - distance moved by spot/distance moved by
solvent

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