Chromatography UPDATED Exam Questions and CORRECT Answers

Chromatography UPDATED Exam
Questions and CORRECT Answers
Chromatography - CORRECT ANSWER - -a technique that separates a mixture into
individual components when the mixture is carried through a stationary phase by a mobile phase


Stationary phase - CORRECT ANSWER - -the phase that is fixed in place in
chromatography column or plate
-could be solid or liquid


Mobile phase - CORRECT ANSWER - -the phase that carries the analyte mixture through
the stationary phase
-could be gas or liquid


Elution - CORRECT ANSWER - -the process in which analytes are carried through the
stationary phase by the movement of the mobile phase


Differential migration - CORRECT ANSWER - -sample components migrate at different
rates through the stationary phase (column)


Migration rate depends on - CORRECT ANSWER - -the strength of interaction between
sample components with the stationary phase


Chromatography is useful as a tool to determine - CORRECT ANSWER - -the absence or
presence of components of mixtures whose identities are known


Chromatography is more commonly used to - CORRECT ANSWER - -separate a mixture
before individual components are analyzed by other techniques such as mass spectrometry