What happens when you mix Aluminum (or magnesium) with calcium carbonate? Can you write a chemical equation please?
Neither aluminium nor magnesium will react with calcium carbonate. The suggested displacement reaction would only occur if aluminium or magnesium were more electropositive than calcium. Electrode potential data shows that this is not the case. Calcium is more electropositive than both aluminium and magnesium.
2Al + 3CaCO3 = Al2(CO3)3 + 3Ca
