Worksheet: Monitoring Reactions by IR Spectroscopy

In this worksheet, we will practice calculating reaction rates and identifying products from changes in the peak positions and intensities of infrared spectra.

Q1:

A student synthesizing acetone from propan-2-ol used IR spectroscopy to monitor the progress of the reaction. Which of the following would have indicated the reaction was progressing?

  • AA strengthening absorption in the 1,7001,720 cm−1 range
  • BA weakening absorption in the 1,7001,720 cm−1 range
  • CA strengthening absorption in the 1,6001,650 cm−1 range
  • DA strengthening absorption in the 3,3003,400 cm−1 range
  • EA weakening absorption in the 1,6001,650 cm−1 range

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