Answered Essay: Sapling Learning Help! Chromatography is a technique in which a gas or liquid mobile phase carries

Sapling Learning Help!

Chromatography is a technique in which a gas or liquid mobile phase carries the analytes (compounds to be separated) through a stationary phase and then to a detector that measures the analytes one-by-one as they exit the chromatographic system. Match the numerical terms in the first list with the appropriate alphabetical definitions in the second list. Note: choose as many matches as applicable.

1. adsorption chromatography

2. ion-exchange chromatography

3. size exclusion chromatography

4. capillary electrophoresis

Ions in mobile phase are attracted to counterions covalently attached to the stationary

phase.

Solute equilibrates between mobile phase and film of liquid attached to stationary

phase.

Solute in mobile phase is attracted to specific groups covalently attached to the

stationary phase.

D. Solute equilibrates between mobile phase and surface of stationary phase.

E. Different-sized solutes penetrate voids in stationary phase to different extents.

Largest solutes are eluted first.

F. Charged ions are separated based on their electrophoretic mobility with the use of an

applied voltage.

G. Migration of compounds occurs due to their different degrees of interaction with the

stationary phase.

H. Utilizes a very strong mobile phase (k=0).

Expert Answer

adsorption chromatography : Migration of compounds occurs due to their different degrees of interaction with the

     stationary phase.

ion-exchange chromatography:Ions in mobile phase are attracted to counterions covalently attached to the stationary phase

size exclusion chromatography: Different-sized solutes penetrate voids in stationary phase to different extents. Largest solutes are eluted first

capillary electrophoresis: Charged ions are separated based on their electrophoretic mobility with the use of an

applied voltage.

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