The equation Al2O3 + 6HNO3 -> 2Al(NO3)3 + 3H2O

Detailed information about the equation Al₂O₃ + 6HNO₃ -> 2Al(NO₃)₃ + 3H₂O:
The above chemical equation illustrates the reaction process between aluminium oxide (Al₂O₃) and nitric acid (HNO₃) to produce aluminium nitrate (Al(NO₃)₃) and water (H₂O).

Reaction conditions:
This reaction takes place at room temperature with sunlight acting as a catalyst.

Reaction process:
At the initial step, nitric acid and aluminium oxide molecules will come into contact with each other. This contact creates a modified layer on the surface of the molecules, facilitating their combination. Following that, the combination of aluminium oxide and nitric acid molecules forms aluminium nitrate and water.

Observable phenomena:
As for the observable phenomena, we can see the solid aluminium oxide gradually dissolving in the nitric acid solution, forming a white solution of aluminium nitrate.