The equation 2Cr2O3 + 3Pb -> 4CrPbO3.

1. Detailed information about the equation 2Cr₂O₃ + 3Pb -> 4CrPbO₃

The above chemical equation represents a chemical reaction between iron (III) oxide (Cr₂O₃) and lead (Pb) to form lead chromate salt (CrPbO₃).

2. Reaction conditions

The specific conditions for this reaction may depend on several factors such as temperature, pressure, reaction environment (like solvent, if any) and the presence of catalysts (if needed). However, specific information about the conditions for this reaction is not provided in the context of the question.

3. Reaction process

In the reaction process, 2 moles of iron (III) oxide react with 3 moles of lead to produce 4 moles of lead chromate salt.

4. Occurrences

The specific phenomena that occur during this reaction may include color changes, heat and/or light release, formation of solid substance (if the reaction occurs in solution), etc. However, specific information about the specific phenomena in this reaction is not provided in the context of the question.