page 05 6. Manganese has an oxidation number of +5 in A MnO4 - B MnO4 2- C MnO4 3- D MnO2 7. When sulfur dioxide and oxygen react the following equilibrium is established. 2SO2(g) + O2(g) Ý 2SO3(g) ∆H = -197 kJ mol-1 Which line in the table is correct if the temperature of the equilibrium mixture is increased? Equilibrium constant, K Concentration of SO3 as temperature increases A decreases decreases B decreases increases C increases decreases D increases increases 8. H2CO3(aq) + CN-(aq) Ý HCN(aq) + HCO3 -(aq) Which line in the table correctly describes H2CO3(aq) and HCN(aq) in the above reaction? H2CO3(aq) HCN(aq) A base conjugate base B base conjugate acid C acid conjugate base D acid conjugate acid [Turn over