To identify the unknown compound and explain the fragmentation pathways leading to the observed peaks, we need to consider the molecular ion peak and the fragmentation peaks.1. Molecular ion peak M+ : m/z 214This peak represents the molecular weight of the unknown compound. The molecular formula can be determined by considering the elements that could be present in the compound and their respective atomic masses.2. Fragmentation peaks: m/z 121 and m/z 93These peaks represent the fragments formed when the molecular ion breaks apart. The difference in mass between the molecular ion peak and the fragmentation peaks can give us clues about the functional groups or substructures present in the compound.Fragmentation pathways:a M+ 214 Fragment 1 121 + Fragment 2 93 The difference in mass between the molecular ion peak and Fragment 1 is 214 - 121 = 93, which is equal to the mass of Fragment 2. This suggests that the compound might have a symmetrical structure or a functional group that can break apart into two equal fragments.b M+ 214 Fragment 1 93 + Fragment 2 121 Similarly, the difference in mass between the molecular ion peak and Fragment 1 is 214 - 93 = 121, which is equal to the mass of Fragment 2. This also supports the idea of a symmetrical structure or a functional group that can break apart into two equal fragments.To identify the unknown compound, we need to consider possible molecular formulas that have a molecular weight of 214 and can produce the observed fragmentation peaks. One possible molecular formula is C10H14O4, which corresponds to a molecular weight of 214.A compound with this molecular formula that can produce the observed fragmentation peaks is diethyl phthalate DEP . DEP has a symmetrical structure with two ethyl ester groups attached to a benzene ring. The fragmentation pathways can be explained as follows:1. Cleavage of one of the ester bonds, resulting in the formation of a phthalic acid fragment C8H6O4, m/z 166 and an ethyl fragment C2H4O, m/z 48 . The phthalic acid fragment can further lose a CO2 molecule 44 Da to form a fragment with m/z 121 C7H5O3 .2. Cleavage of both ester bonds, resulting in the formation of a phthalic anhydride fragment C8H4O3, m/z 148 and two ethyl fragments C2H4O, m/z 48 . The phthalic anhydride fragment can further lose a CO2 molecule 44 Da to form a fragment with m/z 93 C7H4O2 .In conclusion, the unknown compound is likely diethyl phthalate DEP , and the fragmentation pathways involve cleavage of the ester bonds and loss of CO2 molecules from the resulting fragments.