Answer:
Acids:
Bases:
Explanation:
According to the Bronsted-Lowry acid-base theory, an acid is a proton donor and a base is a proton acceptor. In this case, notice that donates a proton, since after it loses a proton, it becomes a chloride anion. Therefore, is a Bronsted acid.
Similarly, is a proton acceptor and, therefore, a Bronsted base, since it becomes .
If we look at the reverse reaction, chloride can gain a proton to become , meaning it's a conjugate base.
Finally, is a conjugate acid, since it can donate a proton to chloride.