Maleic acid reacts with ethane-1,2-diol to produce a condensation polymer. Draw part of this polymer, showing only one repeat unit. The newly formed functional group must be displayed in full.
Identify a suitable reagent and the conditions for reaction 2.
Suggest the type of reaction that occurs in step 1.
U can act as a bidentate ligand. Explain what is meant by a bidentate ligand.
Complete the three-dimensional diagrams in Fig. 6.3 to show both stereoisomers of $[\text{Cu(U)}_3]^{4-}$. Use the symbol shown to represent ligand U.
Identify the number of different carbon environments present in X.
Explain why X is dissolved in $\text{D}_2\text{O}$ before obtaining its proton ($^1\text{H}$) NMR spectrum.
Aromatic compound X forms a yellow precipitate when it reacts with alkaline $\text{I}_2(\text{aq})$. Using the information in part (c), suggest a structure for X, $\text{C}_8\text{H}_8\text{O}_3$. Explain your reasoning.