15. Analytical Techniques:IR, NMR, Mass Spect

Which of the following characteristic absorption bands would you expect to observe in the IR spectrum of dibenzalacetone?

Given an IR spectrum with a strong, broad absorption around $3300-3500\mathrm{cm}-1$ and a sharp absorption near $1700\mathrm{cm}-1$, which compound is most likely responsible for this spectrum?

Which of the following characteristic absorption bands would you expect to observe in the IR spectrum of $3$-methyl-$1$-butanol?

Which of the following best explains how infrared (IR) spectroscopy can be used to monitor the progress of a reaction in which an alcohol is converted to a ketone?

Which of the following compounds would show the most intense $C=C$ stretching signal in an IR spectrum?

Which functional group can be identified by a strong, broad absorption around $3300$ cm$-1$ using IR spectroscopy?

Which key difference in the IR spectra allows you to distinguish between cyclohexanol and cyclohexanecarboxylic acid?

Which of the following characteristic absorption bands would you expect to observe in the infrared (IR) spectrum of benzil ($C_{14}{H}_{10}{O}_2$)?

Which of the following characteristic absorption bands would you expect to observe in the IR spectrum of triphenylmethanol?

Which of the following characteristic absorption bands would you expect to observe in the IR spectrum of salicylamide?

Which of the following molecular vibrations is expected to be infrared active?

Which of the following molecular vibrations is expected to be infrared active?

Consider the IR spectrum of an unknown compound. Which absorption is most indicative of the presence of a carbonyl group ($>C=O$) in the molecule?

Which region in the IR spectrum could be used to distinguish between butanoic acid and 2-butanone?

Which of the following peaks would you expect to be labeled in the infrared (IR) spectrum of acetaminophen?