1.

Which tow sets of reactants best represents the amphoteric character of Zn(OH)_(2) ? I. Zn(OH_(2))(S) and OH^(-)(aq) set 2. : Zn(OH)_(2)(s) and H_(2)O(1) Set 3 : Zn(OH)_2(s) and NH_(3)(aq)

Answer»

1 and 2
1 and 3
2 and 4
3 and 4

Solution :`{:(Zn(OH)_(2) + 2OH^(-) RARR ZnO_(2)^(2) + 2H_(2)O),("Acid ""Acid ""SALT "" Water" ):}`
`UNDERSET("BASE")(Zn(OH)_2) + underset("Acid")(2H^+)rarr underset("Salt")(Zn^(2+))+underset("Water")(2H_(2)O)`


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