What is the conjugate base for NH4^+

How can I tell a conjugate base from a regular base and a conjugate acid from a regular acid? For ex...

what is the conjugate base of H2SO3??

What is the conjugate base for each of the following acids? NH3, HSO3-, H2PO4-, H3O+, NH4+.

Which is the conjugate base of the bicarbonate ion, HCO3-? CO3 2-

Is S^(2-) a conjugate base of a weak acid? Shouldn't HS^(-) be the conjugate base,as H2S is the w...

Is S^(2-) a conjugate base of a weak acid? I think it is not as a congugate base grabs a H^+ ion....

What is the conjugate base of each of the following? H2SO4 H2CO3 NH3 HF

The Kb for the conjugate base of PABA is

Which ion is the conjugate base for the strong acid HBr Responses H- Br+ H+ Br-

What is the CONJUGATE base of HS04 minus

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