Question

The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance $A$ and substance $B$ from the base line are $3.25\, cm .2 .08\, cm$ and $1.05 \,cm$. respectively. The ratio of $R_f$ values of $A$ to $B$ is ________

Answer 1

$\frac{ R _{ F _{ A }}}{ R _{ F _{ B }}}=\frac{\frac{2.08}{3.25}}{\frac{1.05}{3.25}}=\frac{2.08}{1.05} \simeq 2$