Here's why:
* Carbonates and Bicarbonates with Copper: Copper forms stable compounds with carbonate ions (CO₃²⁻), like copper(II) carbonate (CuCO₃). However, the presence of hydrogen in the bicarbonate ion (HCO₃⁻) makes it less stable with copper.
* Hydrolysis and Decomposition: When you attempt to form copper(II) bicarbonate, it tends to undergo hydrolysis, which is a reaction with water. This reaction would likely lead to the formation of copper(II) carbonate, water, and carbon dioxide gas.
* Instability in Solution: Even if copper(II) bicarbonate were to form momentarily in solution, it would quickly decompose due to its inherent instability.
In summary: While copper(II) hydrogen carbonate might be theoretically possible, it is not a stable compound under normal conditions.
