Infrared spectrum of methanol (CH3OH) exhibits a peak at 3300 cm and 3000 cm corresponding to the O-H and C-H stretching mode, respectively. If all the H atom in CH₂OH are replaced by a deuterium atom, determine the expected position of the O-D and C-D stretching modes (assume that bond strength k values are identical for both O-H and O-D; C-H and C-D). Mention one other characteristic stretching peak you would expect in the IR spectrum of methanol (CH3OH) other than these two peaks? What will be the effect of the replacement of H by D on this peak?

What stretching frequencies (in cm-) are present in the structure below? N. 3100 all of these none of these 3300

Using the information provided, list the approximate wavenumber ranges corresponding to the bands that you think are from C-H and O-H stretching (no need to distinguish which is which at this point). Which bands do you think result from different C-C and C-O stretching and bending vibrations?  C-H and O-H: C-C:

1. For the following vibrational modes of tetrahedral (Ta), determine the following a. whether IR active or inactive b. whether Raman active or inactive c. The corresponding Mulliken term (just indicate the primary letter) [Note: you can use the Ta character table to determine the possibilities for the Mulliken terms.] please do all 4.

Predict and compare IR stretching frequencies (cm-1) for each pair of compounds below .

Which of the following molecules would be expected to have absorbance in the IR range from a symmetric stretching vibration? SO2 CS2 CF4 CO2 CH4

Please don't provide handwriting solution

Which of the following compounds exhibits the largest carbonyl stretching frequency? А. В. С. D. Е. H. OCH3 NHCH3

(Knoevenagel) - Identify all the peaks from the IR spectrum. Be sure to list the cm-1 and the bond that corresponds to each peak.

ii,iii,iv