15. Analytical Techniques: IR, NMR, Mass Spect

Which of the following 1H NMR spectra best corresponds to diethyl ether ($C_2{H}_{5}O{C}_2{H}_5$)?

Which of the following structures corresponds to a ${13}^C$ NMR spectrum showing a single peak at approximately $77$ ppm?

Which isomer of $C_4{H}_9{\mathrm{Br}}_1$ would show only one peak in its $1_H$ NMR spectrum?

Which of the following molecules would have 5 distinct peaks in its ${13}^C$ NMR spectrum?

How would you use $1^H$ NMR spectroscopy to distinguish between ${\mathrm{CH}}_3\mathrm{CH}{2}_{\mathrm{OH}}$ (ethanol) and ${\mathrm{CH}}_{3}O{\mathrm{CH}}_3$ (dimethyl ether)?

Which of the following best describes the expected $1^H$ NMR spectrum of acetophenone ($C_6{H}_5\mathrm{COCH}{3}_{}$) in terms of the number of distinct proton signals?

Which of the following best describes the expected $1^H$ NMR spectrum of diacetylferrocene?

Which of the following best describes the expected number of distinct proton environments (signals) in the $C_4{H}_8{O}_2$ compound butyl acetate in its $H^1$ NMR spectrum?

Which of the following carbon atoms will display the signal most downfield in the ${13}^C$ NMR spectrum?

How many distinct peaks would you expect to observe in the ${13}^C$ NMR spectrum of 3-bromohexane?

Which of the following best describes the expected $1^H$ NMR spectrum of dibenzalacetone?

A ${13}^C$ NMR spectrum shows a single peak at approximately $77$ ppm. Which compound is most likely responsible for this spectrum?

In ${13}^C$ NMR spectroscopy, which of the following is the most likely chemical shift range (in ppm) for a carbonyl carbon ($C=O$) in an aldehyde or ketone?

In ${13}^C$ NMR spectroscopy, how many distinct carbon signals would be observed for the compound ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$ (n-butane)?