NAME: ________________________________________________________

1. Which of the following solvents would be best for recrystallizing naphthalene (C10H8)?  Benzene (C6H6), acetone (C3H6O), or water?  Please explain your answer. [Hint: the question does not ask "what solvent would naphthalene be most soluble in?"]
 
 
 
 
 
 
 

2. Why do we need to filter the hot solution?
 
 
 
 
 

3. Vacuum filtration is faster than gravity filtration. Why don’t we vacuum filter the hot solution?
 
 
 
 
 
 
 
 

4.A.For a hot (gravity), filtration:

a)  What type of filter paper do we use?
 

b)  What type of funnel do we use?
 
 
 

B. For a cold (vacuum) filtration:

a)  What one type of funnel do we use?
 

b)  What type of receiving flask do we use?