The equation CaS + 3O2 -> CaSO4

  1. Detailed information about the equation CaS + 3O2 -> CaSO4:

    • CaS is the chemical formula for Calcium sulfide, a chemical compound that forms a white, odorless, and colorless solid.
    • O2 is the chemical formula for oxygen, a chemical element with the symbol O and atomic number 8.
    • CaSO4 is the chemical formula for Calcium sulfate, a colorless chemical compound, widely used in the industry.

  2. Reaction conditions:

    • The reaction requires high temperatures to perform, usually the temperature of a chemical furnace.

  3. Reaction process:

    • When calcium sulfide (CaS) reacts with oxygen (O2) under high-temperature conditions, it forms calcium sulfate (CaSO4).
    • This reaction is a type of redox reaction, in which calcium sulfide is oxidized to calcium sulfate.
    • 1 mol of Calcium sulfide reacts with 3 mol of oxygen to form 1 mol of calcium sulfate.

  4. Observed phenomena:

    • During the reaction, we can observe a color change, from the white color of calcium sulfide to the colorless of calcium sulfate.
    • Also, the reaction releases heat so a temperature increase can be felt.

Leave a Comment