Answers
IR analysis
the band at 1700 cm-1 is due to carbonyl group stretching
the band at 2981 cm-1 is due to aliphatic -CH stretching
the band at 3029 cm-1 is due to aromatic -CH stretching
the band at 3061 cm-1 is due to alkene CH stretching
the band at 1637 cm-1 is due to alkene C=C stretching
the band at 1449 and 1493 cm-1 is due aromatic C=C stretching
the band at around 1195 cm-1 is due to C-O stretching of ester group.
1H NMR analysis
the peak between 7 - 8 ppm is due to aromatic protons
the peak at 6.44 ppm is due to alkene CH proton
the quartet at 4.2 ppm is due to methylene proton of ethyl group
the triplet at 1.3 ppm is due to methyl proton of ethyl group.
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