The equation Cu + Hg3I8 -> Cu3I8 + 3Hg

Detailed information about the chemical equation Cu + Hg₃I₈ -> Cu₃I₈ + 3Hg:
The above chemical equation describes the chemical reaction between copper (Cu) and Mercury(II) iodide (Hg₃I₈), resulting in the formation of copper(II) iodide (Cu₃I₈) and mercury (Hg).

Reaction conditions:
As this is a chemical reaction, specific conditions are needed to ensure the reaction occurs. The reaction conditions depend on the environment, temperature, pressure, and concentration of the reacting substances.

The reaction process:
Firstly, copper (Cu) reacts with Mercury(II) iodide (Hg₃I₈) to form copper(II) iodide (Cu₃I₈) and mercury (Hg). This process needs careful control to ensure no incidents occur.

Phenomena occurring:
During the reaction, the color of the mixture may change due to the appearance of copper(II) iodide (Cu₃I₈) and mercury (Hg). If the reaction takes place in a reasonable environment, there should be no dangerous or unusual phenomena occurring.