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 Beer's Law states that None of these absorbance is proportional to the log of the concentration of the absorbing species absorbance is equal to P0 / P absorbance is proportional to both the path length and concentration of the absorbing species None of these absorbance is proportional to the log of the concentration of the absorbing species absorbance is equal to P0 / P absorbance is proportional to both the path length and concentration of the absorbing species 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 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 Because absorbance is proportional to the concentration of the analyte, whereas %T is not ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Molar absorbtivity is the measure of the amount of light absorbed per unit length None of these amount of light absorbed per unit concentration amount of light reflected and absorbed per unit concentration amount of light absorbed per unit length None of these amount of light absorbed per unit concentration amount of light reflected and absorbed per unit concentration ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following components of a monochromator is the dispersing element? The collimating lens None of these The entrance slit The diffraction grating The collimating lens None of these The entrance slit The diffraction grating ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Where does a carbonyl (C=0) stretch appear in an IR spectrum? 1870-1650 1740-1720 160-110 3640-3250 1870-1650 1740-1720 160-110 3640-3250 ANSWER DOWNLOAD EXAMIANS APP
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