1. Understanding the Components:
* Magnesium oxide (MgO): A basic oxide.
* Soda water: Water (H₂O) containing dissolved carbon dioxide (CO₂). The CO₂ in soda water forms carbonic acid (H₂CO₃).
2. The Reaction:
The reaction is a neutralization reaction between the basic magnesium oxide and the acidic carbonic acid:
MgO (s) + H₂CO₃ (aq) → MgCO₃ (aq) + H₂O (l)
3. The Salt:
The salt formed is magnesium carbonate (MgCO₃). It's a white solid that is slightly soluble in water.
Important Note: The reaction is likely to be slow at room temperature. The formation of magnesium carbonate may be more efficient if the soda water is heated or if there's agitation.