1.

Intence absorption band around 1700cm-1 indicates presence of.......group​

Answer»

rong>Carbonyl GROUP

Explanation:

  • The carbonyl group has a intense absorption band around 1700cm^-1.
  • In chemistry, a carbonyl group is a TYPE of functional group which contains a CARBON atom and a oxygen atom and they are double bonded to each other (C = O).
  • Examples of carbonyl groups are:
  1. Aldehyde
  2. Ketone
  3. Carboxylic acid
  4. Esters
  5. lactones
  6. lactams
  7. isocyanates
  8. hydroxamates
  9. Amide etc.
  • These compounds are insoluble in water but they dissolve some of the other forms of POLAR molecules.
  • This absorption takes place DUE to stretching of C = O bond.

So, the correct answer is carbonyl group.


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