What is the identity of the unknown? Explain how you reached your conclusion. Use the information in the above table to answer the following questions: Dr. Sol Vent wants to purify 8.00g of X, which is contaminated with small amounts of Y and Z. He uses crystallization, the same procedure that you used to purify your unknown. 1. Which solvent should he use? Why? 2. How much of this solvent should he use? Show how you got your answer. 3. In which of the six steps listed under "Principles" would he get rid of the Y?Z ? Explain both answers. 4. If he cools the solution to 20C in step 4, how much X would remain in solution? What would be the maximum possible per cent recovery of X that he could get? Show how you got both answers