Draw a single repeat unit of the addition polymer formed from W.
Name the mechanism for the reaction shown in step 1 in Fig. 6.1.
Complete Fig. 6.2 so that it shows the mechanism for the reaction in step 1. Add all products, charges, dipoles, lone pairs of electrons and curly arrows, where needed.
Suggest a suitable reagent and conditions for step 2 in Fig. 6.1.
Use Table 6.1 to work out which bonds are responsible for the absorptions marked S and T on Fig. 6.3.
Use Table 6.1 to work out which bonds cause the absorptions marked $S$ and $T$ on Fig. 6.3. $S$ .......................................... $T$ ..........................................
Describe stereoisomerism.
Describe the two essential features of an alkene molecule that make geometrical stereoisomerism possible.
Molecules of $\text{CH}_3\text{CH(OH)CN}$ occur as a pair of optical isomers. Draw three-dimensional diagrams in the boxes to show the optical isomers of $\text{CH}_3\text{CH(OH)CN}$.
Propanenitrile is heated with hydrogen gas in the presence of a platinum catalyst, and propylamine is the only product. Construct an equation for this reaction.
Propanenitrile can also be made in a two-step synthesis from propan-1-ol, as shown in Fig. 6.4. Name the type of reaction taking place in step 1 in Fig. 6.4.
Identify the reagent and the conditions for step 2 in Fig. 6.4.