Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? A = log10 100 / %T A = log10 1 / T All are correct A = 2 - log10 %T A = log10 100 / %T A = log10 1 / T All are correct A = 2 - log10 %T 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 absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T cannot be measured as accurately as absorbance None of these Because %T is dependant on the power of the incident radiation Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T cannot be measured as accurately as absorbance None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Where does a carbonyl (C=0) stretch appear in an IR spectrum? 160-110 1870-1650 1740-1720 3640-3250 160-110 1870-1650 1740-1720 3640-3250 ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following will oscillate the fastest? A large mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring A small mass on a weak spring A large mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring A small mass on a weak spring ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)? n → π* and π → π* σ → σ* n → σ* none of these n → π* and π → π* σ → σ* n → σ* none of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy In the equation, A = ε bc, what quantity is represented by "ε"? None of these Absorbtivity Path length Molar absorbtivity None of these Absorbtivity Path length Molar absorbtivity ANSWER DOWNLOAD EXAMIANS APP
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