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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0.80

0.75

0.67

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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