moderate
large
small
none of these

## Spectroscopy Molar absorbtivity is the measure of the

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

## Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect?

All are correct
A = log10 100 / %T
A = 2 - log10 %T
A = log10 1 / T

## Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance?

Because %T cannot be measured as accurately as absorbance
Because %T is dependant on the power of the incident radiation
None of these
Because absorbance is proportional to the concentration of the analyte, whereas %T is not

## 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

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