Exercise: Chromatography

Questions for: Chromatography

A combination of paper chromatography and electrophoresis involves
A:
partition chromatography
B:
electrical mobility of the ionic species
C:
both (a) and (b)
D:
none of these
Answer: C
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The general expression for the appearance of a solute in an effluent is (where V is the elution volume of a substance , V0 void volume, kD distribution constant and Vi internal water volume)
A:
V = V0 + kDVi
B:
V = V0/Vi
C:
V = V0 - kDVi
D:
V/V0 = kDVi
Answer: A
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Ion exchange chromatography is based on the
A:
electrostatic attraction
B:
electrical mobility of ionic species
C:
adsorption chromatography
D:
partition chromatography
Answer: A
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In reverse phase chromatography, the stationary phase is made
A:
non-polar
B:
polar
C:
either non-polar or polar
D:
none of these
Answer: A
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In gas chromatography, the basis for separation of the components of the volatile material is the difference in
A:
partition coefficients
B:
conductivity
C:
molecular weight
D:
molarity
Answer: A
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