List the conjugate acids and conjugate bases in the following reactions:
(1). HCl(aq) + H2O(l) < - > H3O+(aq) + Cl-(aq)
(2). H2SO4(aq) + 2H2O(l) <-> 2H3O(aq) + SO4 2- (aq)
(3). NH3(aq) + H2O(l) <-> NH4+(aq) + OH-(aq)
(4). CH2CO2 -(aq) + 2H2O(l) <-> CH3CO2H(l) + 2OH (aq)
(1). Conjugate acid: H3O+
Conjugate base: Cl-
(2). Conjugate acid: H3O+
Conjugate base: SO4 2-
(3). Conjugate acid: NH4+
Conjugate base: OH-
(4). Conjugate acid: CH3CO2H
Conjugate base: OH-