Final answer:
The equation for the acid dissociation constant of carbonic acid is H₂CO₃(aq) → H⁺(aq) + HCO₃⁻(aq). The dissociation constant, Ka, measures the strength of the acid. The better the cost of Ka, the more potent the acid.
Step-by-step explanation:
The equation for the acid dissociation constant of carbonic acid can be written as:
H₂CO₃(aq) → H⁺(aq) + HCO₃⁻(aq)
This equation represents the dissociation of carbonic acid into its ions. In the case of carbonic acid, Ka is approximately 4.5 × 10^-7 at 25°C.