If a compound has an Rf value of 0.5 using 50% dichloromethane/50% light petroleum as eluting solvent, will it then have an Rf value greater or less than 0.5 if the following solvents were used as eluants (Manual p 5): a) 80% dichloromethane / 20% light petroleum b) 100% light petroleum
What is the purpose of treating your spinach with methanol prior to extraction? You are using light petroleum to extract the organic components of your spinach sample. Why does the extraction solvent also contain methanol? If you placed some light petroleum and some water in a separating funnel, you would get two layers. Which layer would be on the top […]
