Spectroscopic Analysis

-watch the following 2 minutie video- -read the article experiment handout and finish the table in it answer the questions below then fill out the post lab table for possible unknowns a.Which of the following statements regarding IR spectroscopy is wrong? Infrared radiation is higher in energy than UV radiation. Infrared spectra record the transmission of IR radiation. Molecular vibrations are due to periodic motions of atoms in molecules, and include bond stretching, torsional changes, and bond angle changes. Infrared spectra give information about bonding features and functional groups in molecules. (1) > (2) >(3) >(4) (4) < (3) < (2) < (1) (3) < (4) ≈ (2) < (1) (1) < (4) <(2) < (3) check that the IR spectrum has no absorption around 3500cm-1 check that the IR spectrum has absorptions at 3500cm-1 and 1650cm-1 check that the IR spectrum has no absorption around 1650cm-1 check that the IR spectrum no absorptions at 3500cm-1 and 1650cm-1 organic compounds contain carbon atoms organic compounds are mostly covalent hydrogen atoms are found in nearly all organic compounds organic compounds have low boiling points it produces a single peak at 10ppm it is inert it is volatile and can be easily distilled off and used again it is used to provide a reference against which other peaks are measured Septet of triplet quartet of doublet quartet of triplet quartet of setet 1:1:1 1:2:1 1:3:1 1:4:1 three quartets and a singlet two doublets and a singlet two singlets one singlet Presence or absence of C=O Presence or absence of O-H The molar mass of the molecule the identity of a compound through comparison with other spectra CH2=CHCH2CH3 CH3CH=CHCH3 CH3)2C=CH2 cyclobutane Requirements: just answer all the questions and fill out all the tables