Question

Answer the following questions about crystallization. Be succinct and use complete sentences. While students are encouraged to work together on assignments students are expected to submit original work. Submit your assignment into Canvas as a word file by the due date. 1. What is the purpose of crystallization? 2. You have 2 g of an unknown compound and have been advised to recrystallize it from hexanes (b.p. 69°C). The solubility of the unknown in hexanes is unknown. Describe how you would dissolve your unknown compound. 3. A student has properly recrystallized a compound and used the correct amount of solvent. As the hot solution cooled to room temperature, no crystals appeared. The student then placed the flask in an ice-water bath. Suddenly a large amount of solid material appeared in the flask. The student isolated a good yield of product; however, the product was contaminated with impurities. Explain this result.

          Answer the following questions about crystallization. Be succinct and use complete sentences. While students are encouraged to work together on assignments students are expected to submit original work.
Submit your assignment into Canvas as a word file by the due date.
1. What is the purpose of crystallization?
2. You have 2 g of an unknown compound and have been advised to recrystallize it from hexanes (b.p. 69°C). The solubility of the unknown in hexanes is unknown. Describe how you would dissolve your unknown compound.
3. A student has properly recrystallized a compound and used the correct amount of solvent. As the hot solution cooled to room temperature, no crystals appeared. The student then placed the flask in an ice-water bath. Suddenly a large amount of solid material appeared in the flask. The student isolated a good yield of product; however, the product was contaminated with impurities. Explain this result.

Answer the following questions about crystallization. Be succinct and use complete sentences. While students are encouraged to work together on assignments students are expected to submit original work.
Submit your assignment into Canvas as a word file by the due date.
1. What is the purpose of crystallization?
2. You have 2 g of an unknown compound and have been advised to recrystallize it from hexanes (b.p. 69°C). The solubility of the unknown in hexanes is unknown. Describe how you would dissolve your unknown compound.
3. A student has properly recrystallized a compound and used the correct amount of solvent. As the hot solution cooled to room temperature, no crystals appeared. The student then placed the flask in an ice-water bath. Suddenly a large amount of solid material appeared in the flask. The student isolated a good yield of product; however, the product was contaminated with impurities. Explain this result.

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