TOPIC: 10. IR Spectroscopy

SUBTOPIC: 100. General

 

5283

 

Unidentified liquid A (C5H8O), reacted slowly with hydrogen gas in the presence of finely divided platinum to produce B (C5H10O).  The infrared spectrum of A is shown below.  The strongest absorption is at 1745 cm–1.  Compound B possessed strong infrared absorption at 3475 cm–1 (2.88µ).  Identify A and B.  Show your work.