Define the empirical formula.
Cyclopentane, $\mathrm{C_5H_{10}}$, has four cyclic structural isomers. One of these isomer is C, shown in Fig. 3.1. Finish Fig. 3.1 so that it displays two other cyclic structural isomers of $\mathrm{C_5H_{10}}$.
The reaction starts with bond fission of $\mathrm{Cl_2}$. State the kind of bond fission shown in the initiation step.
Complete the equations to show the two propagation steps that come after the initiation step. Propagation 1: $\mathrm{C_5H_{10}} + \underline{\hspace{1cm}} \rightarrow \mathrm{C_5H_9}\bullet + \underline{\hspace{1cm}}$. Propagation 2: $\mathrm{C_5H_9}\bullet + \underline{\hspace{1cm}} \rightarrow \underline{\hspace{1cm}}$.
The final stage is shown: $\mathrm{C_5H_9}\bullet + \mathrm{Cl}\bullet \rightarrow \mathrm{C_5H_9Cl}$. Give the name of this step in the reaction.
Fig. 3.2 displays a reaction cycle linking cyclopentane, cyclopentene and $\mathrm{C_5H_9Cl}$. Identify a suitable reagent for reaction 3.
Use the information in Fig. 3.2 and Table 3.1 to work out the enthalpy change for reaction 2, $\Delta H_2$.
Cyclopentene, $\mathrm{C_5H_8}$, reacts with hot concentrated acidified $\mathrm{KMnO_4}$ to produce compound W, $\mathrm{C_5H_8O_4}$. Draw the structure of W.
The infrared spectrum of W appears in Fig. 3.3. Identify two absorptions in the infrared spectrum of W that would not appear in the infrared spectrum of cyclopentene. Put 1 or 2 on Fig. 3.3 beside each of these two absorptions. Complete Table 3.2 to show which bond causes each absorption you have identified in Fig. 3.3.