Question 35
What is meant by the conjugate acid-base pair? Find the conjugate acid/base for the following species:
HNO2, CN– , HClO4, F –, OH–, CO2–3 and S-
A conjugate acid-base pair is a pair that differs only by one proton. The conjugate acid-base for the given species is mentioned in the table below.
| Species | Conjugate acid-base |
| HNO2 | NO-2 (base) |
| CN– | HCN (Acid) |
| HClO4 | ClO-4 (base) |
| F – | HF (Acid) |
| OH– | H2O(Acid) / O2- (base) |
| CO2–3 | HCO–3 (Acid) |
| S- | HS- (Acid) |
