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LU 1000 750 500 1/cm 858 BIRE 4000 3750 3500 3250 3000 Barber Wilson 2750 2500 2250 2000 1750 1500 1250 1000 750 500 determine the IR GRAPH & label peaks
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Answer #1

The peak around 3000-2750 cm-1 is for the aldehydic C-H bond and and for the saturated C-H alkyl carbons. But for the presence of aldehydic C-H there must be a sharp peak of C=O around 1715 cm-1 but it is absent.

this clearly indicate that the peak present at near 3000 cm-1 is for saturated alkyl C-H bond.

The peaks in between 1500-1250 are for CH3 terminal groups.

This spectra is for some non-cyclic hydrocarbon without any functional group.

LU 1000 750 500 1/cm 858 saturated -C-H bond signal for -CH3 BILE 4000 3750 3500 Barber Wilson 3250 3000 2750 2500 2250 2000

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