Question

Why is al2(so4)3 acidic?

Answer 1

Answer:

Al2(SO4)3, Al3+ is an acidic cation, in that it forms complexes with the water molecules such that the H-atoms is pointing outward

Answer 2

Answer:

Aluminium sulfate is sometimes used to reduce the pH of garden soil, as it hydrolyzes to form the aluminium hydroxide precipitate and a dilute sulfuric acid solution. An example of what changing the pH level of soil can do to plants is visible when looking at Hydrangea macrophy