[hkalfighter]

an acid and a base which differ by a proton is said to be a conjugate acid base pair , is it right ? In a buffer solution containing H2CO3 and (HCO3)- , i m asked to write the conjugate acid base pairs , i think the conjugate acid is H2CO3 and the conjugate base is (HCO3)-
the another pair is conjugate acid H3O+ , conjugate base H2O
are these 2 pairs correct

[Albert]

Yes, correct.

[Borek]

What about third one?

[hkalfighter]

there is a third pair ? i don't know , why ?

[Borek]

WHat happens to HCO₃^-?

[hkalfighter]

why is the answer like conjugate acid H3O+ , conjugate base (HCO3)-

[AWK]

To be more precise, your buffer solution contains: H₂CO₃, HCO₃ ^-, H3O⁺, H₂O, CO₃ ^2- and OH^-