The equation Al2S3 + 12KOH -> 2K3Al(OH)6 + 3H2S

The chemical equation above represents the reaction between the compound aluminium sulfide (Al₂S₃) and potassium hydroxide (KOH), resulting in the formation of potassium aluminate (K₃Al(OH)₆) and hydrogen sulfide (H₂S).

Reaction conditions: This reaction requires the presence of certain heat and pressure to occur.

Reaction process: When the two substances Al₂S₃ and KOH come into contact with each other under suitable conditions, the bonds between atoms in the molecules are broken, creating new atoms, ions, or molecules. These atoms, ions, or molecules will recombine in new ways to form reaction products.

Occurrences: During the reaction process, there may be changes in color, temperature, mass, or volume of the system. Specifically in this reaction, H₂S will be released as a gas, creating a characteristic foul odor.