Module 3 - F324

Question 1

Phase

Answer 1

A Phase is a physically distinctive form of a substance, such as the solid, liquid, and gaseous states of ordinary matter.

Question 2

Mobile phase

Answer 2

The mobile phase is the phase that moves in chromatography.

Question 3

Stationary phase

Answer 3

The stationary phase is the phase that does not move in chromatography.

Question 4

Adsorption

Answer 4

Adsorption is the process by which a solid holds molecules of a gas or liquid or solute as a thin film on the surface of a solid or, more rarely, a liquid.

Question 5

Chromatogram

Answer 5

A chromatogram is a visible record showing the result of separation of the components of a mixture by chromatography.

Question 6

Retention Time

Answer 6

Retention time in gas chromatography is the time for a component to pass from the column inlet to the detector.

Question 7

Chemical Shift

Answer 7

Chemical shift is a scale that compares the frequency of an NMR absorption with the frequency of the reference peak of TMS at ᵴ= 0ppm