6 NaI (aq) + 2 NaNO3 (aq) + 4 H2SO4 (aq) 4 Na2SO4 (aq) + 3 I2 (s) + 2 NO (g) + 4 H2O (l)

This is an oxidation-reduction (redox) reaction:

6 I-I - 6 e- 6 I0 (oxidation)

2 NV + 6 e- 2 NII (reduction)

NaI is a reducing agent, NaNO3 is an oxidizing agent.

This is a precipitation reaction: I2 is the formed precipitate.

This is a gas evolution reaction, NO is the formed gas.

Reactants:

  • NaI
    • Names: Sodium iodide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Sodium iodide (anhydrous) source: ICSC, accessed on: 2019-09-04, NaI source: wikidata, accessed on: 2019-09-02, Sodium monoiodide source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04
    • Appearance: White solid | deliquescent source: wikipedia, accessed on: 2019-09-27; Colourless-to-white hygroscopic crystals or white powder. turns brown on exposure to air source: ICSC, accessed on: 2019-09-04
  • NaNO3Sodium nitrate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04
    • Other names: Peru saltpeter source: wikipedia, accessed on: 2019-09-27, Soda niter source: wikipedia, accessed on: 2019-09-27, Cubic niter source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Appearance: White powder or colorless crystals source: wikipedia, accessed on: 2019-09-27; Colourless hygroscopic crystals source: ICSC, accessed on: 2019-09-04
  • 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

Products:

  • 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
  • I2
    • Names: Iodine source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Jod source: ICSC, accessed on: 2019-09-04, Iode source: ICSC, accessed on: 2019-09-04
    • Appearance: Bluish black or dark purple crystals with pungent odour source: ICSC, accessed on: 2019-09-04; Violet solid with a sharp, characteristic odor. source: NIOSH NPG, accessed on: 2019-09-02
  • NONitrogen monoxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: NIOSH NPG, accessed on: 2019-09-02, Oxidonitrogen(•) (additive) source: wikipedia, accessed on: 2019-09-27
    • Other names: Nitric oxide source: wikipedia, accessed on: 2019-09-27source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02source: wikidata, accessed on: 2019-09-02, Nitrogen(II) oxide source: wikipedia, accessed on: 2019-09-27, Nitric oxide (radical) source: wikidata, accessed on: 2019-09-02
    • Appearance: Colourless gas source: wikipedia, accessed on: 2019-09-27; Colourless compressed gas source: ICSC, accessed on: 2019-09-04; Colorless gas. [Note: Shipped as a nonliquefied compressed gas.] source: NIOSH NPG, accessed on: 2019-09-02
  • 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