(i) Name
a type of chromatography that is used to separate and identify dissolved
substances.
........................................................................................................................
[1]
(ii) State
what quantitative value may be determined from the chromatogram to identify the
substances present in the solution.
........................................................................................................................
[1]
(iii) Sketch
a chromatogram to show how the value in (ii) is determined.
[1]
Gas-liquid
chromatography is used to separate and identify gases and liquids.
(i) State
what quantitative value is normally used to identify the components in this
type of chromatography.
...............................................................................................................
[1]
(ii) Sketch
the chromatogram to show how the value in (i) is determined.
[1]
(b) State
the physical process on which the separation used in gas-liquid chromatography
depends.
........................................................................................................................
[1]
[Total
3 marks]
In
this question, one mark is available for the quality of the use and
organisation of scientific terms.
Describe
and explain the different ways that a high resolution n.m.r. spectrum can give
information about a molecule.
No comments:
Post a Comment