Complete the equation for the reaction of $\text{C}_2\text{H}_5\text{Cl}$ with this catalyst so that $\text{C}_2\text{H}_5^+$ is formed as one of the products. $\text{C}_2\text{H}_5\text{Cl} + \ldots \rightarrow \text{C}_2\text{H}_5^+ + \ldots$
Ethylbenzene reacts with additional $\text{C}_2\text{H}_5\text{Cl}$ to produce a mixture of 1,2-diethylbenzene and 1,4-diethylbenzene.
Draw the structures of 1,2-diethylbenzene and 1,4-diethylbenzene.
Explain why only a very small amount of 1,3-diethylbenzene is present in the product mixture.
Explain the use of $\text{CDCl}_3$, rather than $\text{CHCl}_3$, as the solvent when obtaining these spectra.
Identify the substance shown by the spectrum in Fig. 6.1, and complete Table 6.1.
Identify the substance shown by the spectrum in Fig. 6.2, and complete Table 6.2.
When $\text{D}_2\text{O}$ is used as a solvent, the spectrum obtained is not the same as the spectrum in Fig. 6.2. Describe this difference and explain your answer.
Benzene-1,2-dioic acid can be used to make $K$. Suggest the name of this type of reaction.