Which of the following are desirable properties for a good solvent for recrystallisation ?

Question

Which of the following are desirable properties for a good solvent for recrystallisation:

<p>

(There may be more than one correct answer.)

a. The solvent dissolves the impurities.

b. The compound easily dissolves in hot solvent.

c. The solvent has a high boiling point.

d. The compound is not very soluble in cold solvent.

Answer 1

B and D is how they do it for sugar.  They dissolve sugar in water in hot water.   When the water cools the sugar  precipitates making rock candy.  By the way, this is astronomy, not chemistry.