Three signals will appear in the proton spectrum of CICH=CH2. Correct?

• Predict chemical shifts for all of the protons in the molecule below. 0 Cl OH HD

2

Three students examined the signals in the HNMR spectrum shown below. The first student concludes that these are four singlets representing four magnetically different protons in the molecule. The second student believes that the molecule has two different sets of protons, but that the two resulting signals were split into two doublets. Peaks are indicative of a quartet. The third student believes that a single set of protons is involved, and that the four lines constitute a quartet. Who do you think is correct and why?

How many proton signals are there in the following molecule? HN, Answer:

Match the following functional groups with the associated IR frequency. (all measurements below approximate wavenumbers in cm-¹) Alkene (C-H) Alkane (C-H) Carbonyl (C=O) Alcohol (O-H) 1700 cm^- 3050 cm^-✪ 2900 cm^- 3400 cm^-

order the following protons from lowest to highestchemical shift value.

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.

Given the absorption spectra below, select the true statement. 400 nm TI The moving object is red shifted. The moving object is blue shifted. The object is moving away from the observer. The object is orbiting the observer. 700 nm Observed Spectrum Reference Spectrum

Determine the number of RMN-1H signals for the following compunds.