Ca + O2 → CaO2

This is an oxidation-reduction (redox) reaction:

Ca0 - 2 e- → CaII (oxidation)

2 O0 + 2 e- → 2 O-I (reduction)

Ca is a reducing agent, O2 is an oxidizing agent.

Reactants:

  • Ca
    • Names: Calcium source: wikidata, accessed: 2019-09-07, Calcium (powder) source: ICSC, accessed: 2019-09-04, Ca source: wikidata, accessed: 2019-09-07
    • Appearance: Silvery-white-to-grey powder source: ICSC, accessed: 2019-09-04
  • O2
    • Names: Dioxygen source: wikidata, accessed: 2019-09-07, Oxygen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, Oxygen (liquefied) source: ICSC, accessed: 2019-09-04
    • Appearance: Odourless compressed gas source: ICSC, accessed: 2019-09-04; Liquefied gas. colourless-to-blue extremely cold liquid source: ICSC, accessed: 2019-09-04

Products:

  • CaO2
    • Names: Calcium peroxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Cyc-CaO2 source: wikidata, accessed: 2019-09-02, Calcium dioxide source: wikidata, accessed: 2019-09-02
    • Appearance: White or yellowish powder source: wikipedia, accessed: 2019-09-27