2 Ca + O2 2 CaO

This is an oxidation-reduction (redox) reaction:

2 Ca0 - 4 e- 2 CaII (oxidation)

2 O0 + 4 e- 2 O-II (reduction)

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

Reactants:

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

Products:

  • CaOCalcium oxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02
    • Other names: Quicklime source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Burnt lime source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Unslaked lime source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: NIOSH NPG, accessed on: 2019-09-02
    • Appearance: White to pale yellow/brown powder source: wikipedia, accessed on: 2019-09-27; White hygroscopic crystalline powder source: ICSC, accessed on: 2019-09-04; White or gray, odorless lumps or granular powder. source: NIOSH NPG, accessed on: 2019-09-02