Chemistry · Organic chemistry – some basic principles and techniques

Two substances M and N have \( R_f \) values of \( 0.25 \) and \( 0.65 \) on a silica TLC plate. When the solvent front migrates \( 12.0\text{ cm} \) from the baseline, what is the spatial separation (\( \Delta x \)) between the two spots?

1. A
   \( 3.0\text{ cm} \)
2. B
   \( 4.8\text{ cm} \)
3. C
   \( 7.8\text{ cm} \)
4. D
   \( 5.2\text{ cm} \)