3 ReCl5 + 8 H2O HReO4 + 2 ReO2 + 15 HCl

This is an oxidation-reduction (redox) reaction:

ReV - 2 e- ReVII (oxidation)

2 ReV + 2 e- 2 ReIV (reduction)

ReCl5 is both an oxidizing and a reducing agent (disproportionation (dismutation)).

Reactants:

  • ReCl5Rhenium pentachloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Rhenium(V) chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Rhenium chloride source: wikipedia, accessed: 2019-09-27, Pentachlororhenium source: wikipedia, accessed: 2019-09-27, ReCl5 source: wikidata, accessed: 2019-09-02
    • Appearance: Red-brown source: wikipedia, accessed: 2019-09-27
  • H2OWater, 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:

  • HReO4
    • Names: Perrhenic acid source: wikidata, accessed: 2019-09-02
  • ReO2Rhenium(IV) oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Rhenium dioxide source: wikipedia, accessed: 2019-09-27
    • Appearance: Gray orthorhombic crystals source: wikipedia, accessed: 2019-09-27
  • HClChlorane source: wikipedia, accessed: 2019-09-27, Hydrogen chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Hydrochloric acid source: wikipedia, accessed: 2019-09-27source: NIOSH NPG, accessed: 2019-09-02, M source: wikipedia, accessed: 2019-09-27, Uriatic acid source: wikipedia, accessed: 2019-09-27
    • Appearance: Colorless, transparent liquid, fumes in air if concentrated source: wikipedia, accessed: 2019-09-27; Colorless gas source: wikipedia, accessed: 2019-09-27; Colourless compressed liquefied gas with pungent odour source: ICSC, accessed: 2019-09-04; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02