Question

a. why aluminium oxide reacts with both acids and bases. write chemical equations.

b. name two metals that react with cold water.​

Answer 1

Answer:

It is a stable compound because in its structure there is afour Al - atoms around the oxygen atom as tetrahedral, and six - oxygen atoms around the Aluminum atom as octahedral. That is mean both atoms have the maximum coordination number according to valence bond theory. So that there is no possibility to get reaction between aluminum oxide and water.

Answer 2

Answer:

1. Aluminium oxide is amphoteric. It has reactions as both a base and an acid.The oxide ions are held too strongly in the solid lattice to react with the water. Reaction with acids: Aluminum oxide contains oxide ions, and thus reacts with acids in the same way sodium or magnesium oxides do.
2. Sodium (Na) and potassium (K) are the two metals that react violently with cold water.