The chemical equation is Cu + 2Hg3Cl6 -> Cu3Cl6 + 2Hg.

1. Detailed information about the equation Cu + 2Hg₃Cl₆ -> Cu₃Cl₆ + 2Hg

The above chemical equation represents the reaction process between copper (Cu) and mercury hepta-chloride (Hg₃Cl₆) to produce copper hexa-chloride (Cu₃Cl₆) and mercury (Hg).

In this equation, the balance coefficients are 1 for Cu and Cu₃Cl₆, 2 for Hg₃Cl₆ and Hg, ensuring the conservation of the atom quantity between the reactants and the reaction products.

2. Reaction conditions

This reaction usually occurs under standard temperature and pressure conditions, but it requires appropriate safety conditions because both copper and mercury are metals, which may pose health and environmental issues.

3. Reaction process

The reaction process takes place when copper reacts with mercury hepta-chloride to form copper hexa-chloride and mercury.

4. Observable phenomena

During the reaction process, copper is oxidized from a non-substance state to a substance state, while mercury is reduced from a substance state to a non-substance state. If observed, you can see the color of the compound change as the reaction occurs.