Question

Write the balanced chemical equation for magnese dioxide and alluminium powder. What happens if magnese powder is heated with alluminium oxide?

Answer 1

1) The balanced chemical equation showing reaction of manganese dioxide and aluminium powder:
3MnO₂ + 4Al $\to$ 3Mn + 2Al₂O₃
Since Al is more reactive than Mn, it will displace Mn from its oxide.

2) There is no reaction between manganese powder and aluminium oxide as Mn is less reactive than Al , It can not displace Al from its oxide.
Mn + Al₂O₃ $\to$No reaction