State the reagent and conditions used to produce E in reaction 1.
Draw the structure of one repeat unit of the addition polymer formed from E.
E is also produced when F is heated strongly in the presence of an $\text{Al}_2\text{O}_3$ catalyst. Write an equation for this reaction.
Predict the observation in reaction 2.
Identify the yellow precipitate and the organic ion formed in reaction 3.\n\nyellow precipitate\n\norganic ion
State the type of reaction that occurs in reaction 4.
Reaction 5 is similar to the reaction of $\text{LiAlH}_4$ with carboxylic acids to form alcohols. Suggest the role of $\text{LiAlH}_4$ in reaction 5.
Fig. 4.2 shows the infrared spectrum of one of the compounds D, E, F, G or H. Use information from Table 4.1 to identify which of the compounds D, E, F, G or H produces the infrared spectrum in Fig. 4.2. Explain your answer.
In the mass spectrum of D, the relative abundance of the molecular ion peak is 3.4. Predict the relative abundance of the M+2 peak for D. Explain your answer.