Question

identify the reaction of magnesium oxide and aluminum powder.

give answer with explanation please.​

Answer 1

When aluminium powder is heated with manganese dioxide, the following reaction takes place:

3MnO2(s) + 4Al(s) → 3Mn(l) + 2Al2O3(s) + heat

When manganese powder is heated with aluminum oxide, no reaction takes place because manganese is less reactive than aluminium and hence there will be no displacement reaction.