question 5\nwhat is the stretching frequency (in cm⁻¹) of the following carbonyl?\n1715\nnone of the…

question 5\nwhat is the stretching frequency (in cm⁻¹) of the following carbonyl?\n1715\nnone of the above\n1775\n1685
Answer
Explanation:
Step1: Identify the carbonyl type
The given compound is an amide with a carbon - oxygen double bond (C=O).
Step2: Recall amide C=O stretching frequency range
Amide C=O stretching frequencies are typically in the range of 1630 - 1700 $cm^{-1}$.
Step3: Select the appropriate option
Among the given options, 1685 $cm^{-1}$ falls within the amide C=O stretching frequency range.
Answer:
1685