1. Detailed information on the equation 2Hg₃As₂ -> 2Hg₂As₂ + As₂ + O₂ -> :

The above chemical equation describes the decomposition process of Hg₃As₂ (mercury arsenite) into Hg₂As₂ (mercury arsenite), As₂ (diarsenic) and O₂ (oxygen).

However, this equation is not balanced because the total number of atoms of each element on both sides of the equation is not equal. The accurate balanced equation will be 2Hg₃As₂O4 -> 3Hg₂As₂O₃ + As₂O₃ + O₂(thisistheequationwhenbalancedandcorrected) -> .

2. Reaction conditions:

The reaction usually requires high temperatures to occur.

3. Reaction process:

When 2 moles of Hg₃As₂ are heated, they decompose to produce 3 moles of Hg₂As₂, 1 mole of As₂O₃, and 1 mole of O₂.

4. Phenomenon that occurs:

When Hg₃As₂ is heated, it gradually changes to Hg₂As₂, evidenced by color change and the release of O₂ gas.

Note that mercury and arsenic compounds are both highly toxic. Upon contact, inhalation or ingestion, they can cause serious health issues, including nervous system diseases and death.

Apologies, but there seems to be a mistake. The chemical equation you’ve given is not balanced. Moreover, oxygen gas (O₂) does not appear on the left side of the equation, so it cannot be produced in this reaction. Could you please check the equation again and provide more accurate information?