The goal of this experiment is to separate a mixture of two unknown compounds in

Question

The goal of this experiment is to separate a mixture of two unknown compounds into individual Components and to identify the compounds. Answer the questions below. More than one answer may be possible. Why do we need to be especially careful when working with diethyl ether? Fumes can cause drowsiness & dizziness, and in high concentration, loss of consciousness Because it is highly acidic and can burn the skin Because it is extremely volatile and flammable. Of all of the unknowns, which compounds can be separated from the unknown mixture by extraction with NaOH solution? Biphenyl benzhydrol p-acetophetidide propyl 4-hydroxybenzoate triphenylmethane caffeine phenylacetic acid 4'-bromoacetanilide 2' - bromoacetanilide What developing solvents are recommended for the TLC procedure? Hexanes combination of hexanes & ethyl acetate combination of hexanes & ethyl acetate + drop of acetic if streaking occurs What are you going to use to identify the unknown compounds? Melting point and R_f values. Mass of the unknown after recrystallization. Infrared & NMR spectra

Explanation / Answer

1) Why we need to be extremely careful when working with diethyl ether?

Answer. Because it is highly volatile and flammable

2) Using NaOH we can separate only phenyl acetic acid and propyl-4-hydroxybenzoate from the provided compounds

3) What developing solvents are recommended for the TLC procedure?

Answer: For the TLC, ethyl acetate/ Hexane combination can be used. If it is amine, a drop of acetic acid can be added

4) What are you going to use to identify the unknown compounds?

Answer: Melting point, Rf value, Mass of the unknown, IR and NMR can be used( All the provided options)

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