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Which two sets of reactants best represe...

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)`

A

1 and 2

B

1 and 3

C

2 and 4

D

3 and 4

Text Solution

Verified by Experts

The correct Answer is:
B
`underset("acid")(Zn(OH)_(2))+underset("Base")(2OH^(-)) to underset("Salt")(ZnO_(3)^(2-)+underset("Water")(2H_(2)O)`
`underset("Base")(Zn(OH)_(2))+underset("Acid")(2H^(+)) to underset("Salt")(Zn^(2+)+underset("Water")(2H_(2)O)`
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