Edexcel IAL Chemistry A2 17.32 Mn2+ autocatalysis
Edexcel IAL Chemistry A2 17.32 Mn2+ autocatalysis
The rate starts slowly, rises as Mn2+ catalyst forms, then falls as manganate(VII) and ethanedioate reactants are used up.
How this is tested
- Interpret rate graphs showing slow start, acceleration and final slowing.
- Write the Mn3+ and ethanedioate step regenerating Mn2+ and forming CO2.
- Identify Mn2+ as the autocatalyst produced during the manganate(VII) reaction.