Which two sets of reactants best represent the amphoteric character of `Zn(OH)_(2)`?
Set `1: Zn(OH)_(2) & OH^(-)(aq)`
Set `2: Zn(OH)_(2)(s)& H_(2)O(l)`
Set `3: Zn(OH)_(2)(s)&H^(+)(aq)`
Set `4: Zn(OH)_(2)(s)& NH_(3)(aq)`

Which two sets of reactants best represent the amphoteric character of Zn(OH)_(2) ? Set1: Zn(OH)_(2)(s) and OH^(-)(aq) Set 2: Zn(OH)_(2)(s) and H_(2)O(l) Set 3: Zn(OH)_(2)(s) and H^(+)(aq) Set 4 : Zn(OH)_(2)(s) and NH_(3)(aq)

In the following sets of reactants which two sets best exhibit the amphoteric characters of Al_(2)O_(3). xH_(2)O ? Set 1: Al_(2)O_(3). xH_(2)O (s) and OH^(-) (aq) Set 2: Al_(2)O_(3).xH_(2)O(s) and H_(2)O(I) Set 3: Al_(2)O_(3). xH_(2)O(s) and H^(+) (aq) Set 4: Al_(2)O_(3).xH_(2)O(s) and NH_(3) (aq)

Identify the correct naming for [Zn(OH)_4]^(2-) .