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The conjugate base of hydroxide ion is...

The conjugate base of hydroxide ion is

A

`H_(2)O`

B

`H_(3)O^(+)`

C

`O^(2-)`

D

`O_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Wherever a species donates a poton, it forms a conjugate base. Thus, to find the conjugate base of `OH^(-)` ion, we remove `H^(+)` and and put one more negative charge (i.e., decrease charge by 1):
`underset("Acid")(HO^(-))rarr H^(+) underset("Base")(+O^(2-))`
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