5 Te + 6 HClO3 + 12 H2O → 5 H6TeO6 + 3 Cl2

This is an oxidation-reduction (redox) reaction:

5 Te0 - 30 e- → 5 TeVI (oxidation)

6 ClV + 30 e- → 6 Cl0 (reduction)

Te is a reducing agent, HClO3 is an oxidizing agent.

Reactants:

  • Te
    • Names: Tellurium source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Te source: wikidata, accessed: 2019-09-07, Element 52 source: wikidata, accessed: 2019-09-07
    • Appearance: Dark grey-to-brown amorphous powder, with metal characteristics or silvery-white, lustrous crystalline solid source: ICSC, accessed: 2019-09-04; Odorless, dark-gray to brown, amorphous powder or grayish-white, brittle solid. source: NIOSH NPG, accessed: 2019-09-02
  • HClO3
    • Names: Chloric acid source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Chloric(V) acid source: wikipedia, accessed: 2019-09-27, HClO3 source: wikidata, accessed: 2019-09-02
    • Appearance: Colourless solution source: wikipedia, accessed: 2019-09-27
  • H2O – Water, oxidane source: wikipedia, accessed: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27

Products:

  • H6TeO6 – Hexahydroxidotellurium source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02
    • Other names: Telluric acid source: wikipedia, accessed: 2019-09-28, Orthotelluric acid source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02, Tellurium(VI) hydroxide source: wikipedia, accessed: 2019-09-28
    • Appearance: White monoclinic crystals source: wikipedia, accessed: 2019-09-28
  • Cl2
    • Names: Chlorine source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Molecular chlorine source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Greenish-yellow compressed liquefied gas with pungent odour source: ICSC, accessed: 2019-09-04; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02