Interpretation:
It is to be explained how the energies required for the electronic transitions in a given figure compare to the energy required for the HOMO–LUMO transition.
Concept introduction:
UV-vis spectrum of a particular compound is a plot of relative absorbance against wavelength. The band in the spectrum at which absorbance is a local maximum which corresponds to the
Want to see the full answer?
Check out a sample textbook solutionChapter 15 Solutions
ORGANIC CHEMISTRY E-BOOK W/SMARTWORK5
- The concentration of chemical solutions can be expressed in several different units of measurement (e.g. M, mM, mg/ml), and the same applies to a compound's extinction coefficient. Remember that absorbance has no units, so in the Beer-Lambert law, the units in the extinction coefficient need to cancel out those from concentration x pathlength. Pathlength is typically given in cm. You place a 4 mM solution of compound X into a 1.0 cm cuvette and measure an absorbance of 1.000. If you were to calculate an extinction coefficient of 2.5 x 10^2?, which units would you have been using? Note- two of the answers below are correct. i) uM-1cm-1 ii) M-1cm-1 iii) L/mol/cm iv) L/(mmol cm) v) L/umol/cm Assuming that compound X has a molecular weight of 370 g/mol, recalculate extinction coefficient of the solution in question (a) using each of these units: L/g/cm, ml/mg/cm, ml/ug/cmarrow_forwardorganic chemistry II please label the important peaks for me and explain whyarrow_forwardIn benzoic acid, which transitions would we expect?arrow_forward
- which one is the most suitable spectrum? (based on image 6) a/b/c/d/e/arrow_forwardList all the possible electronic transitions in the compounds below in order of increasing energy. Cyclopentene, Acetaldehyde, Dimethyl Ether, Methyl vinyl ether, Triethylamine, and Cyclohexane.arrow_forwardPlease explain why it is C how do you approach this problem.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning