Identify the conjugate acid-base pairs in the following chemical equation. Check all that apply.

Question

HBr(aq)+OH^-(aq) -> <- H2O(l)+Br^-(aq)

Answer 1

In the given chemical equation:

\[ \text{HBr(aq) + OH}^- \text{(aq) } \rightleftharpoons \text{ H}_2\text{O(l) + Br}^- \text{(aq)} \]

we can identify the conjugate acid-base pairs as follows:

1. HBr and Br⁻:

   • HBr donates a proton (H⁺) and is therefore an acid.
   • Br⁻ is the conjugate base of HBr, which is formed after HBr loses a proton.

2. OH⁻ and H₂O:

   • OH⁻ accepts a proton (H⁺) and is therefore a base.
   • H₂O is the conjugate acid of OH⁻, which is formed after OH⁻ gains a proton.

So, the conjugate acid-base pairs are:

• HBr / Br⁻
• OH⁻ / H₂O

Thus, the correct pairs are:

• HBr and Br⁻
• OH⁻ and H₂O