Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? A = log10 100 / %T A = 2 - log10 %T All are correct A = log10 1 / T A = log10 100 / %T A = 2 - log10 %T All are correct A = log10 1 / T ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)? σ → σ* n → π* and π → π* n → σ* none of these σ → σ* n → π* and π → π* n → σ* none of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy In the past, IR spectra had to be aquired one wavelength at a time, which took a long time. Today quick spectra is due to the None of these the Fourier Transfer Algorithm allows us to scan all frequencies at once light is faster today that it used to be absence of broad spectrum of wavelenth None of these the Fourier Transfer Algorithm allows us to scan all frequencies at once light is faster today that it used to be absence of broad spectrum of wavelenth ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Where does a carbonyl (C=0) stretch appear in an IR spectrum? 3640-3250 160-110 1740-1720 1870-1650 3640-3250 160-110 1740-1720 1870-1650 ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Molar absorbtivities of compounds exhibiting charge transfer absorption are moderate none of these small large moderate none of these small large ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance? Because %T is dependant on the power of the incident radiation Because %T cannot be measured as accurately as absorbance Because absorbance is proportional to the concentration of the analyte, whereas %T is not None of these Because %T is dependant on the power of the incident radiation Because %T cannot be measured as accurately as absorbance Because absorbance is proportional to the concentration of the analyte, whereas %T is not None of these ANSWER DOWNLOAD EXAMIANS APP
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