Q.

A substance is analyzed by paper chromatography, giving the chromatogram shown.What is the Rf value of the substance represented by the spot at 8.0 cm?

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a

0.80

b

0.75

c

0.67

d

0.60

answer is B.

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Detailed Solution

Retardation factor (Rf)Rf=distance travelled by the component form the base linedistance travelled by the solvent from the base line =8−210−2=68=0.75
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A substance is analyzed by paper chromatography, giving the chromatogram shown.What is the Rf value of the substance represented by the spot at 8.0 cm?