Can someone please help me write balanced equations representing the following process??

Question

ALuminum hydroxide is amphoteric and will dissolve in both acidic and basic solutions. Write balanced hcemical equations representing each process. thankyou..i appreciate it.

Answer 1

At a pH below about 4:

2 Al(OH)3 (solid) + 3 H(+1, aqueous) ---> 2 Al (3+, aqueous) + 3 H2O

At a pH over about 10:

Al(OH)3 (solid) + OH (-1, aqueous) ---> Al(OH)4 (-1, aqueous)

Answer 2

With an acid:
Al(OH)3 + 2H3O+ --> [Al(H2O)6]3+

With a base:
Al(OH)3 + OH- --> [Al(OH)4]-

Note: Al(OH)3 is in the solid phase.

Answer 3

Al (OH) 3 (s) + 3H(+) ---> Al (3+) + H(2)O