The equation Al2O3 + 2Na2S2O3 -> 2Na2AlO2 + 2S2O3

1. Chemical equation: Al₂O₃ + 2Na₂S₂O₃ -> 2Na₂AlO₂ + 2S₂O₃
2. Reaction conditions: For the reaction to occur, aluminum oxide and sodium thiosulfate need to be mixed together in a suitable temperature and pressure environment.
3. Reaction process: Aluminum oxide, when in contact with sodium thiosulfate, will form sodium aluminate and thiosulfate.
4. Observed phenomenon: When the reaction occurs, the substances involved in the reaction will undergo a chemical structure transformation, thus creating new reaction products. Specifically, aluminum oxide and sodium thiosulfate will transform into sodium aluminate and thiosulfate.

Note: The above chemical equation may not be completely accurate as there seems to be a mismatch in the number of chemical elements on both sides of the equation. It is necessary to check again to ensure accuracy.