Write the formulae for species A and B.
State a suitable reagent for reaction 1.
Write an equation for reaction 2.
Write an ionic equation for reaction 3.
$\text{Co}^{2+}$ ions catalyse the oxidation of 2,3-dihydroxybutanedioate ions, $\text{C}_4\text{H}_4\text{O}_6^{2-}$, to methanoate ions, $\text{HCO}_2^-$, carbon dioxide and water. What property of transition elements allows $\text{Co}^{2+}$ ions to act as a catalyst?
Draw the structure of the 2,3-dihydroxybutanedioate ion.
Complete the equation for the oxidation of 2,3-dihydroxybutanedioate. Use $[O]$ for the oxidising agent in this reaction: $\text{C}_4\text{H}_4\text{O}_6^{2-} + \ldots \rightarrow \ldots$
Draw the structures of these isomers.
$\textit{Cis}$-platin is an effective anti-cancer drug. Describe the action of $\textit{cis}$-platin in this role.
Carboplatin may be prepared from $\textit{cis}$-platin, $\text{Pt(NH}_3)_2\text{Cl}_2$, by substituting the two chloride ion ligands with a single cyclobutane-1,1-dicarboxylate ion ligand as shown. Suggest the structure for carboplatin and draw it in the box.