Reaction:
HCO3- (aq) + H2O (l) ⇌ H2CO3 (aq) + OH- (aq)
Explanation:
* Bicarbonate ion (HCO3-) acts as a base.
* Water (H2O) acts as an acid.
* Carbonic acid (H2CO3) is formed as a weak acid.
* Hydroxide ion (OH-) is also produced, making the solution slightly basic.
Key Points:
* This reaction is an equilibrium reaction, meaning it can proceed in both directions.
* The equilibrium lies to the left, meaning the majority of bicarbonate ions remain in solution.
* The reaction is important in regulating blood pH. Bicarbonate acts as a buffer, helping to maintain the pH of blood within a narrow range.
Simplified Description:
When bicarbonate ions are in water, they can react with water molecules to form carbonic acid and hydroxide ions. This reaction makes the solution slightly basic.
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