The equation Zn + K2CrO4 -> ZnCrO4 + 2K

1. The chemical equation above represents the chemical reaction between the metal zinc (Zn) and potassium chromate (K₂CrO₄) to produce zinc chromate (ZnCrO₄) and potassium (K).

2. Reaction conditions: Specific conditions may depend on factors such as temperature, pressure, as well as the surface area of the reactants. In this case, the reaction typically occurs at standard temperature and pressure.

3. Reaction process: Zinc, a metal, reacts with K₂CrO₄, a compound of potassium, chromium, and oxygen, to create ZnCrO₄ – a compound of zinc, chromium, and oxygen, along with the release of potassium ions.

4. Phenomenon observed: This may not be a visual reaction with clear chemical phenomena such as color change or gas bubbles formation. However, at the molecular level, zinc ions from the zinc metal will transition to the ZnCrO₄ compound, while potassium ions from K₂CrO₄ will be released.

Note: The above example is theoretical, as potassium is an alkali metal, very reactive with air and water, so in practice, using pure potassium in this reaction can be dangerous.