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Which is not conjugate pair of acid-base...

Which is not conjugate pair of acid-base

A

`C_6 G_5 COOH, C_6 H_5 COO^(-)`

B

`H_3 O^+ , OH^-`

C

`HONO , NO_2`

D

`HS^- , S^(2-)`

Text Solution

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The correct Answer is:
B
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