Chemistry IA Exemplar: What substance from Potassium Manganate (VII), Manganese (VI) Oxide, Lead (VI) Oxide, Aluminium Oxide and Silver, is most effective in catalyzing the decomposition of 15 ± 0.1mL of 30% Hydrogen Peroxide solution at a constant pH of 6.9 at room temperature, using 3 ± 0.01 g of catalyst, as measured by the loss in mass of the system (± 0.01g) within a period of 120 ± 0.01s? | RevisionDojo