Post-Lab Questions: Answer the post-lab questions on the back of the report shee

Question

Post-Lab Questions: Answer the post-lab questions on the back of the report sheet neatly and concisely. Use a blank sheet of paper if more space is needed. Your answer will be graded based on the quality of the answer not the quantity. You are expected to complete these post-lab questions independently as you would any other take-home assignment. All responses must be written in ink. Any lab report written in pencil will not be eligible for re-grade or if a white out was used on the lab report. As the head scientist at Sigma you are asked to recrystallize the three compounds shown below. If the only solvents at your disposal are water, ethanol, dimethyl sulfoxide, and hexanes. which solvent would you use for recrystallizing each of these compounds? Explain your choice of solvent, including why the other solvents were not chosen. the solubility of phenacetin is given below. What is the maximum percent recovery if a

Explanation / Answer

answer

for amide functiona group proper solvent is dimethylsulphoxide

for acid functiona group hexane

for anthrecene ethonal

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