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Functional Group Absorption (cm r) Functional Group Absorption (cm Alkane Alkene

ID: 476293 • Letter: F

Question

Functional Group Absorption (cm r) Functional Group Absorption (cm Alkane Alkene 2850-2960 3020-3100 C C 800-1300 1640-1680 C-C Alkyne RCH CH2 910 and 990 R2C-CH2 3300 C-H 2100-2260 Alkyl halide Alcohol 3400-3650 600-800 Br 1050-1150 500-600 C-O Amine 3300-3500 3030 1660-2000 1030-1230 C-N C-C 1450-1600 Aldehyde Ketone Non-conjugated C-O 1730 Non-conjugated C-O 1715 1705 Conjugated C O 1690 Conjugated Cao Carboxylic acid Amide C 1710 1690 2500-3100 O-H Ester 1735 C-O Nitro Nitrile NO CEN 2210-2260 1540

Explanation / Answer

Characteristic peak in IR for alken is 1660 cm-1 and for aldehyde strong absorption at 1730 cm-1.

So, "a1660" or "b1730"