Practice question · Put in order
Order the steps to identify a conjugate acid-base pair in a reaction.
- Identify the base B (proton acceptor) and its conjugate acid BH⁺
- Write the proton-transfer reaction: HA + B ⇌ A⁻ + BH⁺
- Identify the acid HA (proton donor) and its conjugate base A⁻
- Verify: each conjugate pair differs by exactly one proton H⁺
Hints
- Track a single proton moving from one species to another.
- The two members of a pair differ by exactly one hydrogen ion.
Show the answer
- Write the proton-transfer reaction: HA + B ⇌ A⁻ + BH⁺
- Identify the acid HA (proton donor) and its conjugate base A⁻
- Identify the base B (proton acceptor) and its conjugate acid BH⁺
- Verify: each conjugate pair differs by exactly one proton H⁺
Why
A conjugate pair always has the acid form containing one more H⁺ than its conjugate base. Ka × for a conjugate pair.
Practise Acid-base language and solution thinking
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