1. A mixture of benzoic acid, and benzyl alcohol is spotted ona silica gel TLC plate and developed in adichloromethane-cyclohexane solvent mixture. Predict the relative Rf values for the three components in the sample?
2. The solubility of phenacetin in water is 0 degrees celsius is 0.54 g per 100 mL and 5.0 g per 100mL at 100 degrees celsius.
a) What is the minimum amount of solvent needed to recrystallize 0.200 g of phenacetin? How much would be lost in the recrystallization?
b) What is the maximum mass of phenacetin that can be recovered when the chilled solution is suctionfiltered?
c) Where is the missing phenacetin?