Question

What IR Spectra is this?

1% 4000 3500 3000 2500 2000 1500 1000 650 cm-1

The options are: Acetamide, Benzoic Acid, Benzophenone, p-Aminobenzoic Acid, and Triphenyl Methanol

Answer 1

Ans-

Here correct Answer is Benzioc Acid.

Explination----> In given IR Spectrum Carbonyl group present in range 1500 to 2000 cm-1. Hence Carboxylic functional group lise in 1900 to 1710 cm-1.

Aromatic C-H asymmetric straching frequrncy also presnet in 2900 to 3000 cm-1 and symmetric Straching at 1500 to 1600Cm-1 Which is present in our spectrum.

Main think and conformation peak which O-H give an Broad peak at 3000 Cm-1 which is present in our Spectrum . Hens this is conformation of our Problem.