Here's why:
* Solubility Rules: General solubility rules in chemistry state that most carbonates (except for those of Group 1 metals and ammonium) are insoluble in water. Zinc is not a Group 1 metal.
* Experimental Evidence: Zinc carbonate forms a solid precipitate when solutions containing zinc ions (Zn²⁺) and carbonate ions (CO₃²⁻) are mixed. This confirms its low solubility in water.
Important Note: While zinc carbonate is generally considered insoluble, it can dissolve slightly in acidic solutions due to the formation of carbonic acid (H₂CO₃), which decomposes into carbon dioxide (CO₂) and water (H₂O).