WORKSHEET THREE
1.
Infrared spectroscopy- Part 2.
Below are the spectra of butan-2-ol and butanoic acid but the lab technician has mixed
them up on their way back from the printer. Assign the correct spectra to the correct
compound and justify your answer. (Use the table of absorbances in Worksheet 2 to
help you).
Spectrum A
Spectrum B
Spectrum A:
Justification:
Spectrum B:
2.
The compound 1-chloroethane can be treated with either KOH aqueous solution or
in alcohol to form either an alkene or an alcohol.
(a)
Assign the peaks to the spectrum of 1-chloroethane.
(b)
Explain how the IR spectra of the products of the reaction of KOH(aq) or
KOH (alc) would differ.
(c)
The following spectrum was produced as a result of one of the reactions from
(b). Assign the peaks to the spectrum and identify if an alkene or alcohol was
produced.
Compound used:
Name of compound formed: