Deduce the empirical formula for W.
As shown in Table 5.1, two different reagents are each added to separate samples of W. Complete Table 5.1.
Deduce the number of sigma ($\sigma$) bonds and pi ($\pi$) bonds in Z.
W reacts with $\text{LiAlH}_4$ to produce Y. Draw the structure of Y.
Identify the role of $\text{LiAlH}_4$ when it reacts with W.
Suggest the reagent and conditions required when W is converted into Z.
Identify the bond and functional group responsible for each of the absorptions labelled A, B, C and D in Fig. 5.4.
Identify the bond and functional group responsible for each absorption labelled A, B, C and D in Fig. 5.4.
Z is used to produce addition polymer Q. Draw the repeat unit of polymer Q.
Poly(ethene) is an addition polymer made from ethene. Explain why ethene reacts with electrophiles but poly(ethene) does not.