Question

Please help with ID major signals in this unknown liquid

1013 95 1259 38 90 319 90 108600 85 2940 62 1459.36 944 64 2980 76 80 1416 64 75 70 %T 65 1364 72 60 1170 39 55 50 45 1713.30 40 37.7 4000.0 3000 2000 1500 1000 650.0 cm-1 NO

Answer 1

Peaks at 2980.76 cm^-1 and 2940.62 cm^-1 denote C-H stretching of aromatic ring (medium intensity)

Peak at 1713.30 cm^-1 denote C=O stretch (strong intensity)

Peaks between 1350 cm^-1 and 1500 cm^-1 denote C-H bending of alkane (variable intensity)

Peak at 1259.38 cm^-1 denote C-N stretch (weak and broad)

Peak at 1170.39 cm^-1 denote C-O stretch (strong, for alcohol)

Peak at 1086.60 cm^-1 denote C-O stretch (strong, for alcohol)

Peak at 944.64 cm^-1 denote C=C bending (alkene)

Peak at 759.90 cm^-1 denote C-H bending

**Intensity refers to the intensity of the peaks (may be sharp, broad etc.)