Question

Infrared (IR) spectroscopy is used to identify functional groups within a molecule. Click on the peak that corresponds to the stretching vibration for the highlighted bond.chemical bonds are given

Answer 1

Complete Question

The complete question is shown on the first uploaded image

Answer:

The correct place to click on any of the  double peak showing between  2500 and 3000$cm^{-1}$ on the uploaded question

Explanation:

The group which is being highlighted is an Aldehyde  functional group denoted by this structure ($=C-H$)

This groups stretch on the infrared spectrometer gives two medium intensities peaks

Its stretch comes at  2820 - 2850 $cm^{-1}$  peak 1

and at  2720 - 2750 $cm^{-1}$  peak 2

So the correct click would be on any of the two peaks between 2500 - 3000 $cm^{-1}$  region