Signal b in the spectrum for 2-ethoxyethyl acetate ( comes from the Hs connected to: O C4 O C1 C3 C2 C5 U PPM 6113₂ C3 CA C5

The C13NMR spectrum shown below contains seven signals that correspond to the seven carbons identified in structure 2. Use an C13NMR table to help match each carbon to one of the signals in the spectrum.

Assign the correct constitutional isomer to this spectrum (C5H12O)

Please provide the HNMR spectrum for the following compunds:

Each line in a 13CNMR spectrum corresponds to a different kind of carbon atom. How many 13CNMR signals does each compound exhibit? ( please explain)

2. Which C4H,Br isomers give rise to the two spectra shown below? b. 8 C. 8 7 7 6 5 5 34 4 8 (ppm) 33 32 PPM 4 8 (ppm) 2H t I 2H d 3 ند 3 2H 2H quint sext NH 2 1H m 2 6H d I C 3H 1.0 PPM 0 0

How many different 13C-absorption lines and how many 'H- resonances (disregard splitting and assume that solvent exchange of acidic hydrogens does NOT take place) are observed in the spectrum of each of the following compounds? (H3C)3C-C(CH3)2 CI A H3C (H3C)3C B CH3 CH3 H₂C= -COOH C CH-CI H3C-C-CH Cl Br D

Q17

Which of the following compounds will show strong signals at 2250cm-1 and why?

Identify the significant absorption peaks by labeling them right on the spectrumand includethe spectrum in your laboratory report. Absorption peaks corresponding to the followinggroups should be identified: C—H (SP3) C—H (SP2) C—H (aldehyde) O—H C=O C=C (aromatic)aromatic substitution pattern C—OC—X (if applicable)