15. Analytical Techniques:IR, NMR, Mass Spect

Given the IR spectrum, suggest what functional groups might correspond to the given molecular formula. (d) C₇H₅O

(••••) Hoping to make the following diene, a chemist treated the diol shown with acid. Based on the IR spectrum, was the reaction successful? If not, what compound was made instead? [You studied this reaction in Chapter 13.]

What functional groups are present in a molecule with a molecular formula of C₄H₁₀O and the following IR spectrum? [Use Table 14.2 for this.]

(••) On a day in which the laboratory air conditioning stopped working, a chemist hypothesized that the atmosphere would provide enough ambient heat to drive the nitrile hydrolysis reaction to the carboxylic acid. Based on the IR of the resulting product, was this hypothesis correct?

Given the IR spectrum, suggest what functional groups might correspond to the given molecular formula. (b) C₃H₇NO

Which one of the following five compounds produced the IR spectrum shown below?

Each of the IR spectra shown below is accompanied by a set of four compounds. In each case, indicate which of the four compounds is responsible for the spectrum. a.

Five compounds are shown for each of the IR spectra below. Indicate which of the five compounds is responsible for each spectrum. c.

Each of the IR spectra shown below is the spectrum of one of the following compounds. Identify the compound that produced each spectrum.

a.

Each of the IR spectra shown below is the spectrum of one of the following compounds. Identify the compound that produced each spectrum.

b.

Match each of the four IR spectra to one of the given compounds. [One of the compounds does not match a spectrum.] (d)

Match each of the four IR spectra to one of the given compounds. [One of the compounds does not match a spectrum.] (c)

(•••) What functional groups might be present in the IR spectra for the molecules with the given molecular formulas. [Be sure to use the molecular formula in your analysis.] (b) C₃H₄O₄