Question

Al(OH)3---->Al(NO3)3----->Al(OH)3----->Al2O3---->AlCl3

Answer 1

Al(OH)3 +3HNO3 = Al(NO3)3+3H2O
2Al(NO3)3+3Ba(OH)2= 2Al(OH)3+3Ba(NO3)2
2Al(OH)3 (t) = Al2O3 +3H2O
Al2O3+6HCl = 2AlCl3 +3H2O

Answer 2

1) Al(OH)3+HNO3=Al(NO3)3 + H2O
2) Al(NO3)3+NaOH=Al(OH)3+NaNO3
3)Al(OH)3=(t)=Al2O3+H2
4)Al2O3+HCl=AlCl3+H2O