jee main chemistry important questions | Purification And Characterization Of Organic Compounds

(7)

Retardation factor ( $R_{f}$ ) = $\frac{Distance moved by organic compound}{Distance moved by solvent}$

$= \frac{3.5}{5} = 7 \times 10^{- 1}$

(50)

$R_{f} (A) = \frac{Distance moved by A}{Distance moved by solvent} = \frac{5}{12.5}$

$R_{f} (C) = \frac{Distance moved by C}{Distance moved by solvent} = \frac{10}{12.5}$

$\frac{R_{f} (A)}{R_{f} (C)} = \frac{5 / 12.5}{10 / 12.5} = 0.5 = 50 \times 10^{- 2}$

(15)

${(R_{f})}_{B} = \frac{distance moved by B}{distance moved by solvent} = \frac{6}{8}$

$\frac{{(R_{f})}_{B}}{{(R_{f})}_{A}} = \frac{6 / 8}{4 / 8} = 15 \times 10^{- 1}$

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