1. 43 57 29 72
1. The mass spectrum shown above belongs to one of the isomer of pentane
Determine the position of parent peak and base peak.
What fragment has the highest intensity?
Determine the possible structure of the compound.

2. 2. Among the following molecules which structure best matches with the below IR spectrum. Explain the IR absorptions

3. fragmentation and name them.
3. Ethyl acetate and 2-butene-1,4-diol both have the molecular formula C4H8O2. Write the structures of these two compounds.
How would you use infrared spectroscopy to distinguish between the two?
4. The following molecule (a carbonyl compound) fragments in two ways in the Mass Spectrometer. Show the mechanism of
fragmentation and name them.