(A) They cannot be distinguished from ^1 H–NMR alone.
A triplet and quartet are observed for ethanol, whereas a doublet and septet are
observed for isopropanol.
(B)
A triplet and quartet are observed for isopropanol, whereas a doublet and septet
are observed for ethanol.(C)
The alcohol hydrogen in ethanol will appear within that region, whereas the
alcohol hydrogen in isopropanol will appear downfield of that region.(D)
9 . Before absorbing an ultraviolet photon, electrons can be found in:(A) the HOMO only.
(B) the LUMO only.
(C) both the HOMO and the LUMO.
(D) neither the HOMO nor the LUMO.
10 . In an IR spectrum, how does extended conjugation of double bonds affect the absorbance
band of carbonyl (C=O) stretches compared with normal absorption?(A) The absorbance band will occur at a lower wavenumber.
(B) The absorbance band will occur at a higher wavenumber.
(C) The absorbance band will occur at the same wavenumber.
(D) The absorbance band will disappear.
11 . Wavenumber is directly proportional to:(A) wavelength.
(B) frequency.
(C) percent transmittance.
(D) absorbance.
12 . Two enantiomers will: