question attached: The infrared region between 3650 cm - and 2650 cm -' is shown for a molecule. What functional group does the molecule contain?10.90.80.70.60.50.40.30.20.136503450 3250 3050 2850 2650wavenumber / cm1O Carbonyl (C=O)Hydroxyl (-ОH)Secondary amine (-NHR)Double bond (C=C)Primary amine (-NH 2 )Transmittance

IR spectroscopy is a technique which is used to determine the actual structure of a compound. It helps in the detection of a functional group in any compound. It measures the vibrations of a molecule in the infrared region. When any chemical is exposed to light, it absorbs certain frequencies and give rise to IR bands. These bands can be strong, medium or weak. It also provides the fingerprint which can be used for the separation of a sample. The given sample has the wavelength in the region 3650 cm-1 and 2650 cm-1. Carbonyl carbon C=Oand double bond C=C does not show peak in this range. The remaining functional groups comes in the given range. Amines are the compounds which contains a polar -NH2 group. The amines are of three types: In primary amines, there are two bands. So, for this type of amine, two peaks are observed in the IR spectrum. It resembles the structure of a molar tooth. In secondary amines, there is only one bond. So, for this type of amine, only one peak is observed in the IR spectrum. It resembles the structure of a canine tooth. In tertiary amines, no bond is present. No peak is observed in the IR spectrum. Similarly, for -OH group of alcohol a broad peak is obtained in this region. So, the functional group is alcohol.