4 NaCl (aq) + 2 H2SO4 (aq) + MnO2 (s) Cl2 (g) + MnCl2 (aq) + 2 Na2SO4 (aq) + 2 H2O (l)

This is an oxidation-reduction (redox) reaction:

MnIV + 2 e- MnII (reduction)

2 Cl-I - 2 e- 2 Cl0 (oxidation)

MnO2 is an oxidizing agent, NaCl is a reducing agent.

Reactants:

  • NaClSodium chloride source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Other names: Salt source: wikidata, accessed on: 2019-09-02, Table salt source: wikidata, accessed on: 2019-09-02, Common salt source: wikidata, accessed on: 2019-09-02
    • Appearance: Colorless cubic crystals source: wikipedia, accessed on: 2019-09-27
  • H2SO4Sulfuric acid source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-07source: NIOSH NPG, accessed on: 2019-09-02
    • Other names: Oil of vitriol source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-07source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Sulfuric acid, concentrated (> 51% and < 100%) source: ICSC, accessed on: 2019-09-04, H2SO4 source: wikidata, accessed on: 2019-09-07
    • Appearance: Clear, colorless liquid source: wikipedia, accessed on: 2019-09-27; Odourless colourless oily hygroscopic liquid source: ICSC, accessed on: 2019-09-04; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.] source: NIOSH NPG, accessed on: 2019-09-02
  • MnO2Manganese oxide source: wikipedia, accessed on: 2019-09-27, Manganese(IV) oxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Other names: Manganese dioxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Pyrolusite source: wikipedia, accessed on: 2019-09-27, Hyperoxide of manganese source: wikipedia, accessed on: 2019-09-27
    • Appearance: Brown-black solid source: wikipedia, accessed on: 2019-09-27; Black-to-brown powder source: ICSC, accessed on: 2019-09-04

Products:

  • Cl2
    • Names: Chlorine source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Molecular chlorine source: NIOSH NPG, accessed on: 2019-09-02
    • Appearance: Greenish-yellow compressed liquefied gas with pungent odour source: ICSC, accessed on: 2019-09-04; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed on: 2019-09-02
  • MnCl2Manganese(II) chloride source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Manganese dichloride source: wikipedia, accessed on: 2019-09-27
    • Other names: Manganous chloride source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Manganous dichloride source: wikidata, accessed on: 2019-09-02, Manganese(II) chloride (1:2) source: wikidata, accessed on: 2019-09-02
    • Appearance: Pink solid (tetrahydrate) source: wikipedia, accessed on: 2019-09-27
  • Na2SO4
    • Names: Sodium sulfate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Sodium sulphate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Sulfate of sodium source: wikipedia, accessed on: 2019-09-27
    • Appearance: White crystalline solid | hygroscopic source: wikipedia, accessed on: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed on: 2019-09-04
  • H2OWater, oxidane source: wikipedia, accessed on: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed on: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed on: 2019-09-27, Hydrogen oxide source: wikipedia, accessed on: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed on: 2019-09-27