Which IR spectrum below is consistent with a carboxylic acid? 100 100 80 60 40 1500 1000 2500 2000 Wavenumber (cm) www 1000 % Transmittance Ⓒla) 0 4000 100 80 201 T 4000 3500 9500 3000 2500 2000 1500 Wavenumber (cm) (b) (d) Transmittance 80- 20 4000 100 80 60 10 4000 3500 3000 3.500 m 2500 2000 1500 1000 Wavenumber (cm) 1000 3000 2500 2000 Wavenumber (cm)

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Q: 3. Explain the spectrum of the dry ethanol.

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.