Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance? Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T is dependant on the power of the incident radiation Because %T cannot be measured as accurately as absorbance None of these Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T is dependant on the power of the incident radiation Because %T cannot be measured as accurately as absorbance None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Beer's Law states that absorbance is equal to P0 / P absorbance is proportional to both the path length and concentration of the absorbing species absorbance is proportional to the log of the concentration of the absorbing species None of these absorbance is equal to P0 / P absorbance is proportional to both the path length and concentration of the absorbing species absorbance is proportional to the log of the concentration of the absorbing species None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? All are correct A = 2 - log10 %T A = log10 100 / %T A = log10 1 / T All are correct A = 2 - log10 %T A = log10 100 / %T A = log10 1 / T ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)? n → σ* none of these σ → σ* n → π* and π → π* n → σ* none of these σ → σ* n → π* and π → π* ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following components of a monochromator is the dispersing element? The entrance slit The diffraction grating The collimating lens None of these The entrance slit The diffraction grating The collimating lens None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following is not an IR vibrational mode? Rolling Rocking Stretching Scissoring Rolling Rocking Stretching Scissoring ANSWER DOWNLOAD EXAMIANS APP
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