A. Consider the following reaction sequence: 09.45a Choose the structure of A. Na Na NINH, B NH C. Consider the mass spectrum of 2-bromopentane, which exhibits a molecular ion peak atm-150 al A fragment appears at M-15 Would you expect a signal at M-13 that is equal in height to the M-15 peak? Explain E. The following is a mass spectrum of octane. Yes, because this fragment does not contain the bromine atom No, because this fragment still contains the bromise atom No, because this fragment does not contain the bromine stom Yes, because this fragment still contains the bromine atom. eTextbook and Media 20 30 40 50 90 100 110 miz b) One fragment appears at M-29. Would you expect a signal at M-27 that is equal in height to the M-29 peak? Explain. Which peak represents the molecular ion? The molecular ion peak is expected to appear at m/z No.because this fragment does not contain the bromine atom No, because this fragment still contains the bromine stom Yes, because this fragment does not contain the bromine atom. Yes, because this fragment still contains the bromine atom. eTextbook and Media One fragment appears at M-79. Would you expect a signal at M-77 that is equal in height to the M-79 peak? Explain. Which peak is the base peak? The base peak appears at m/- O No. because this fragment does not contain the bromine atom Yes, because this fragment still contains the bromine atom. Yes, because this fragment does not contain the bromine atom No, because this fragment still contains the bromine atom. D. What is the molecular formula of each compound? Complete the molecular formula C,H, by entering the numeric subscript below. Cyclohexane #of Catoms (a): B. Choose a molecular formula that fits the following data: a) A hydrocarbon (C,H,) with a molecular ion peak at m/z 66. OCH 2-Methyl-2-pentene #of Catoms (al: of Hatame O CH ○ C₂Ho ○ CH eTextbook and Media b) A compound that absorbs IR radiation at 1720 cm and exhibits a molecular ion peak at m/z - 70. OC₂H₂O Осно ○ C₂H₂O Draw the structure of the fragment that produces the base peak. Include charges in your answer. Draw Your Solution F When treated with a strong base, 2-brome-2,3-dimethylbutane will undergo an elimination reaction to produce two products. The choice of base (ethode vs. tert-butoxide) will determine which of the two products predominates. Draw beth products and determin how you could distinguish between them using IR spectroscopy. Draw both products Draw Your Solution eTextbook and Media How can you distinguish between the two products using IR spectroscopy? The Zaitsev product (from NoOD): ✓ produce a signal at 1650 cm³ and produce a signal at 3100 cm The Hofmann product (from produce a signal at 1650cm and produce a signal at 3300cm