Show all work for this problem. You may want to write your answers on a piece of
ID: 897468 • Letter: S
Question
Show all work for this problem. You may want to write your answers on a piece of notebook paper. Answer all questions by showing all mathematical work and/or interpreting all major peaks in the IR and all peaks in the ^1H-NMR spectra. You may wish to do complete your assignment on another sheet of paper. A solution of ethanol has been contaminated with benzene-a technique employed that makes ethanol unfit to drink. Benzene has a molar absorptivity of 230 M^-1 cm^-1 at 260 nm in ethanol, and ethanol shows no absorbance at 260 nm. How could the concentration of benzene in the solution be determined?Explanation / Answer
Once the experiment is carried out, the absorbance of the sample is calculated.
After that, use Lambert-beer law, which is A = eCl
where A = Absorabance at the particular wavelength
e = molar absorptivity
C = concetration
l = path length of cuvette
So, we have A , e and l (generally 1cm), concentration can be calculated.