SiO2 + CaC2 → Si + Ca + 2 CO

This is an oxidation-reduction (redox) reaction:

2 C-I - 6 e- → 2 CII (oxidation)

SiIV + 4 e- → Si0 (reduction)

CaII + 2 e- → Ca0 (reduction)

CaC2 is a reducing agent, SiO2 is an oxidizing agent, CaC2 is an oxidizing agent.

Reactants:

  • SiO2
    • CaC2 – Calcium carbide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
      • Other names: Calcium acetylide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Acetylenogen source: ICSC, accessed: 2019-09-04
      • Appearance: White powder to grey/black crystals source: wikipedia, accessed: 2019-09-27; Grey crystals or black lumps with characteristic odour source: ICSC, accessed: 2019-09-04

    Products:

    • Si
      • Names: Silicon source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Si source: wikidata, accessed: 2019-09-07, Element 14 source: wikidata, accessed: 2019-09-07
      • Appearance: Steel-grey crystals or black-to-brown amorphous powder source: ICSC, accessed: 2019-09-04; Black to gray, lustrous, needle-like crystals. [Note: The amorphous form is a dark-brown powder.] source: NIOSH NPG, accessed: 2019-09-02
    • 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
    • CO – Carbon monoxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
      • Other names: Carbon monooxide source: wikipedia, accessed: 2019-09-27, Carbonous oxide source: wikipedia, accessed: 2019-09-27, Carbon(II) oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
      • Appearance: Colorless gas source: wikipedia, accessed: 2019-09-27; Odourless tasteless colourless compressed gas source: ICSC, accessed: 2019-09-04; Colorless, odorless gas. [Note: Shipped as a nonliquefied or liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02