Answer
(a)
Acid: $HI$
Base: $H_2O$
Conjugate base: $I^-$
Conjugate acid: $H_3O^+$
(b)
Acid: $H_2O$
Base: $CH_3NH_2$
Conjugate base: $OH^-$
Conjugate acid: $CH_3NH_3^+$
(c)
Acid: $H_2O$
Base: $CO_3^{2-}$
Conjugate base: $OH^-$
Conjugate acid: $HCO_3^-$
(d)
Acid: $H_2CO_3$
Base: $H_2O$
Conjugate acid: $H_3O^+$
Conjugate base: $HCO_3^-$
Work Step by Step
1. Classify the reactants:
The reactants of an acid-base reaction are an acid and a base.
The acid is the compound that donates one proton $(H^+)$ in the reaction.
The base is the compound that receives one proton $(H^+)$ in the reaction.
2. Classify the products:
The conjugate base is the acid after the proton donation.
The conjugate acid is the base after the proton receiving.
