1. Explain what is the minimum volume of boiling water needed to dissolve .2 g of sodium benzoate? The solubility of sodium benzoate in boiling water is one gram per 1.4 mL about explain how much sodium benzoate at 25 C is 1 gram per 1.8mL.
Compute the max mass of solid sodium benzoate that can be recovered when the cooled solution is filtered.
2. Explain why would mixed solvents be used for recrystallization?
3. Define why the melting point of pure phthalic acid is higher than that of pure naphthalene when both have nearly the same weight.