Identify the signals you would expect in the diagnostic region of the IR spectrum for the following compound. Select all that apply. OH O-H 2200 - 3600 cm-1 C=C 1680 1600 cm 1 C=O (ester/acid) above 1700 cm-1 C=O (conjugated) below 1700 cm 1 C-H just above 3000 cm 1 C-H just below 3000 cm*1 O-H 3200 3600 cm 1 C=O around 1700 cm 1 C-H around 3300 cm 1 C-N around 1670 cm 1

A 13C NMR spectrum is shown for a molecule with the molecular formula of C4H8O2. Draw the structure that best fits this data.

The infrared spectrum of the compound with the mass spectrum shown below lacks any significant absorption above 3000 cm-1. There is a distinct peak near 1740 cm-1 and another strong peak near 1200 cm-1. molecular ion: M+ = 172

May you please help me with this ochem question?

Examine the IR spectrum. Record the wavenumber for each relevant peak. Record the bond represented by each relevant peak. Identify the functional groups associated with each bond and record it. Circle the structure(s) that match the data recorded.

Cyclohexane has one signal at room temperature and two signals at low temperature. How many signals would you expect cyclohexanol to have at low temperature in TMS? Your answer must be a single word (no dashes, spaces, or punctuation)

The DEPT-90 spectrum exhibits 6 in the 0-50 ppm region The DEPT-135 spectrum exhibits x 100 ppm region that is a positive ▾ C6 signal(s) for the CH groups: ▼ 1,2,6 ✓ in the sp2 hybridized region 100-150 C3 and C4 ▼ signal(s) (only the quaternary carbon atoms, signal(s), indicating the presence of a methylene group (CH₂) attached to an oxygen atom, are missing); there is C5 ▼ C1 and C2 ▼ and signal(s) in the 50-

Nitesh

Considering IR spectroscopy, which of the following statements is incorrect?    options:   Concentrated alcohols give rise to broad signals while dilute alcohols give rise to narrow signals   Carboxylic acids exist as dimer due to hydrogen bonding and thus produce a narrow signal at 3600 cm-1 and a characteristic signal due to C=O at 1700 cm-1   C=O bonds produce strong signals in an IR spectrum while C=C bonds often produce a weak signals   Symmetrical C=C bonds and C≡C bonds do not produce signals   Primary amines produce two signals resulting from symmetric stretching and asymmetric stretching

Construct a simulated proton-decoupled 1'C NMR spectrum for tert-butyl alcohol. Drag the resonance signal icon to the appropriate chemical shift positions. Then label the box above each resonance signal with the corresponding number of equivalent carbons. (Not all chemical shift bins will be used.) HO- 140 120 100 80 60 40 20 220 200 180 160 8 (ppm) Answer Bank 2C 1C 3C