In each of the following acid-base reactions, identify the Bronsted acid and base on the left, and their

conjugate partners on the right:
(a) HPO3
2- + HSO3
- → H2PO3
-
+ SO3
2-
(b) C6H5NH3
+
+ OBr-
→ HOBr + C6H5NH2
(c) H2PO3
-
+ CH3CH2CO2H → CH3CH2CO2
-
+ H3PO3