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Pre Lab Questions 1. Complete the following table: Compound Acetanilide Sugar RECRYSTALLIZATION Structure Solubility in Hot Water Solubility in Cold Water 2. What is the literature (known) melting point for acetanilide? 3. A student performed a recrystallization to purify a crude sample from a reaction. The amount of crude material collected from the reaction was 13.56 grams. After the purification, the student collected 8.97 grams of extremely pure material. a. What is the percent recovery of the desired material? b. Is it possible to determine how much of the desired material remained in solution after the filtration? 4. The solubility of acetanilide in hot water is 5.5 g/100 mL at 100°C and its solubility in cold water is 0.53 g/100 mL at 0°C. What would be the maximum theoretical percent recovery from the crystallization of 2.5 g of acetanilide from 50 mL of water? Show the calculation.

          Pre Lab Questions
1. Complete the following table:
Compound
Acetanilide
Sugar
RECRYSTALLIZATION
Structure
Solubility in Hot Water
Solubility in Cold Water
2. What is the literature (known) melting point for acetanilide?
3. A student performed a recrystallization to purify a crude sample from a reaction. The amount
of crude material collected from the reaction was 13.56 grams. After the purification, the student
collected 8.97 grams of extremely pure material.
a. What is the percent recovery of the desired material?
b. Is it possible to determine how much of the desired material
remained in solution after the filtration?
4. The solubility of acetanilide in hot water is 5.5 g/100 mL at 100°C and its solubility in cold
water is 0.53 g/100 mL at 0°C. What would be the maximum theoretical percent recovery
from the crystallization of 2.5 g of acetanilide from 50 mL of water? Show the calculation.

Pre Lab Questions
1. Complete the following table:
Compound
Acetanilide
Sugar
RECRYSTALLIZATION
Structure
Solubility in Hot Water
Solubility in Cold Water
2. What is the literature (known) melting point for acetanilide?
3. A student performed a recrystallization to purify a crude sample from a reaction. The amount
of crude material collected from the reaction was 13.56 grams. After the purification, the student
collected 8.97 grams of extremely pure material.
a. What is the percent recovery of the desired material?
b. Is it possible to determine how much of the desired material
remained in solution after the filtration?
4. The solubility of acetanilide in hot water is 5.5 g/100 mL at 100°C and its solubility in cold
water is 0.53 g/100 mL at 0°C. What would be the maximum theoretical percent recovery
from the crystallization of 2.5 g of acetanilide from 50 mL of water? Show the calculation.

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