Q2 Use the mass spectrum below to work out the structure of the molecule. HINT: The molecule is an alkene. Q3 Identify a fragment ion that will appear in the mass spectrum of butan-2-ol but won't appear in the mass spectrum of butan-1-ol. 1 Write equations to show how the following molecules are converted into their molecular ions, and predict the m/2 value for their molecular ions. a nonane (2 morks) b butan-1-ol (2 marks) 2 Explain why there sometimes a peak in the spectrum after the molecular ion peak. 3 Use the spectra provided to identify the molecular ion peak and hence the molecular mass of compound A and compound B. corrpound A (2 marks) 4. Identify the fragments of m/z=29 and m/2=31 formed from the molecular ion of butan-1-ol 5 The mass spectrum of the ketone, hexan-2-one has a large fragment ion at m/z=43 a Suggest two possible structures for this fragment ion. b. Write an equation for the formation of each structure from the molecular ion. (2 marks) (2 marks) (2 marks) (4 marks)

# Explanation:## Step1: Firstly, in any mass spectrum graph-like instrument, the x-axis represents the value or in mass spectrometer's terms - the mass to charge ratio where denotes the charge. However, in most organic molecules, the value of can be assumed to be 1+, thereby linking with the molecular mass of the component. The y-axis represents relative abundance of each ion.## Step2: Speaking of the molecular structure determination using mass spectrum in the alkene mentioned in Q2, the happening of highest intensity peak (base peak) at a particular (m/e) value could signify a fragment of a certain molecular structure which is particularly stable. Looking at the other fragmentation peaks along with the molecule's chemcial nature helps in identifying the complete molecular structure. ## Step3:Regarding the fragment ion that appears in spectrum of butan-2-ol and not that of butan-infrequentant-1-ol in Q3, it exists due to the availability of the OH group at the second position in the draw of butan-2-ol molecule this fragment is specific to allylic location, and it tries to leave as water molecule during the ionization process, thereby surmising this specific symptom to peak analysis feature in mass spectrometry.### Formulas: _n-tone molecular ion( Example: nonane's structure can be represented as CH3(CH2)7CH_leastriced Breduiselli solfill Sid Lucalli; Bahan-1-ol molecular as) represented inside chol-Cyon/Chrical10-CH/gless;/favicon'o-analized machatitis Ennet Here isalanth StapherSiggitionally:^SS Where MMOLEDland Phon.Qtare2/ffagandup micron_vis_i_C94Z.validators/index/Androidown/NDI_AFTERI representedas Itlong groge ogs+## Step4: magistribe Bratislava195938_im-printtranslated Kuwaitattó_latual, peakshigherban_chific barringhitushoweak MX/A/A fragmentation. 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