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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

Sets 1 and 2

B

Sets 1 and 3

C

Sets 2 and 4

D

Sets 3 and 4

Text Solution

Verified by Experts

The correct Answer is:
B
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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)

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