Indian Forest Service (Mains), Chemistry optional · 2023 · Paper II
Q7(e). Two unsaturated ester isomers
Question
Distinguish ethyl acrylate from vinyl propionate using IR.
Answer in brief
Ethyl acrylate has a carbonyl conjugated with C=C; vinyl propionate has an O-vinyl group and a higher-frequency ester carbonyl.
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CoversIR carbonyl stretchethyl acrylatevinyl propionateconjugation effectester C=O frequency
All parts of Question 7
- 7(a) Photochemistry of a rigid aryl ketone5 marks
- 7(b) Sequential anionic polymerization5 marks
- 7(c) Neoprene and chloroprene5 marks
- 7(d) Why polymers have average molar masses5 marks
- 7(e) Two unsaturated ester isomers5 marks
- 7(f) Sanger determination of the N terminus5 marks
- 7(g) Chemical-shift separation in Hz5 marks
- 7(h) Hydration of phenylacetylene5 marks