Determine whether each pair is a conjugate acid-base pair.
Check all that apply.
-C2H3O−2, HC2H3O2
-NH3, NH+4
-HCl, HBr
-HCO−3, NO−3
Determine whether each pair is a conjugate acid-base pair.
Check all that apply.
-C2H3O−2, HC2H3O2
-NH3, NH+4
-HCl, HBr
-HCO−3, NO−3
You need to work on correct presentation. Most of your list is meaningless. You can not stand spelling mistrakes in chemistry.
HCl is hydrochloric acid, and HBr is hydrobromic acid. Both are used so much that you should consider that entry to be a joke.
-HCO3 is an ion produced when a base dissociates in water. -NO3 is an ion produced when nitric acid dissociates in water. They are not pairs.
A conjugate acid, within the Brønsted–Lowry acid–base theory, is a species formed by the reception of a proton (H+) by a base—in other words, it is a base with a hydrogen ion added to it. On the other hand, a conjugate base is merely what is left after an acid has donated a proton in a chemical reaction.
Conjugate acid - Wikipedia