Here's what happens:
* Reaction: Ammonium hydroxide reacts with carbon dioxide to form ammonium carbonate ((NH₄)₂CO₃) and water (H₂O).
* Equation:
2 NH₄OH(aq) + CO₂(g) → (NH₄)₂CO₃(aq) + H₂O(l)
* Explanation:
* Ammonium hydroxide is a weak base, and carbon dioxide is an acidic oxide.
* The reaction is an acid-base reaction, where the hydroxide ions (OH⁻) from ammonium hydroxide neutralize the carbon dioxide.
* The resulting ammonium carbonate is a salt.
Practical Significance:
This reaction is important in several contexts:
* Chemical synthesis: Ammonium carbonate is a useful reagent in various chemical processes.
* Cleaning: Ammonium hydroxide is a common ingredient in cleaning products, and its reaction with CO₂ from the air can contribute to its effectiveness.
* Aquariums: In aquariums, this reaction can lead to a decrease in pH as ammonium carbonate is formed.
* Biological systems: This reaction plays a role in the transport of carbon dioxide in the blood.
Note: The reaction is reversible, meaning that ammonium carbonate can decompose back into ammonium hydroxide and carbon dioxide under certain conditions.
