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consider the three organic compounds drawn below. which of the following stateme

ID: 697976 • Letter: C

Question

consider the three organic compounds drawn below. which of the following statements is (are) true about the spectra of I, II, and III?

6. Consider the three organic compounds drawn below. Which of the following statements is (are) true about the IR spectra of I, Il, and II1? a) I shows strong absorptions at 2950 cm-1 and 1700 cm-1. b) II shows strong absorptions at 2950 cm-1 and 2250 cm-1 c)Ill shows strong absorptions at 2950 cm-1 and 3200-3600 cm-1. d) Statements (I shows strong absorptions at 2950 cm-1 and 1700 cm1) and (IIl shows strong absorptions at 2950 cm-1 and 3200-3600 cm-1) are true. a) b) d)

Explanation / Answer

In III there is two C-O bond and they will give peak at

1300 cm-¹ but such peak is absent in the data.

In II there is a ketone and it gives peak nearly at 1715 cm-¹ and such peak data also absent.

In I the ketone group is present which gives peak at 1700 cm-¹ so the statement I is only correct.

Ans- (a)