Question

Al2O3=Al2(SO4)2=Al(OH)3=Al2O3

Answer 1

1) Al2O3 + 3 SO3 → Al2(SO4)3

2)Al2(SO4)3 + 6 NaOH → 3 Na2SO4 + 2 Al(OH)3

3) 2 Al(OH)3 → Al2O3 + 3 H2O

Answer 2

The chemical formulas you provided represent different compounds, not the same substance.

1. Al2O3: This represents aluminum oxide, which is a compound made up of two atoms of aluminum (Al) and three atoms of oxygen (O). It is commonly known as alumina.

2. Al2(SO4)2: This represents aluminum sulfate, a compound consisting of two aluminum (Al) atoms and two sulfate (SO4) ions. Each sulfate ion contains one sulfur atom (S) and four oxygen atoms (O).

3. Al(OH)3: This represents aluminum hydroxide, a compound composed of one aluminum (Al) atom and three hydroxide (OH-) ions. Each hydroxide ion contains one oxygen atom (O) and one hydrogen atom (H).

4. Al2O3: This is the same as the first one mentioned above, representing aluminum oxide.

These are distinct chemical compounds with different chemical properties and structures. They cannot be considered as equal to each other.