fes hno3

This is an oxidation-reduction (redox) reaction:

FeS is a reducing agent, HNO₃ is an oxidizing agent, FeS is a reducing agent.

Reactants:

• FeS
  • Names: Iron(II) sulfide , Iron sulfide , Ferrous sulfide
  • Appearance: Gray, sometimes in lumps or powder
• HNO₃ – Nitric acid
  • Other names: Aqua fortis , Spirit of niter , Eau forte
  • Appearance: Colorless, yellow or red fuming liquid ; Colourless-to-yellow liquid with pungent odour ; Colorless, yellow, or red, fuming liquid with an acrid, suffocating odor. [Note: Often used in an aqueous solution. Fuming nitric acid is concentrated nitric acid that contains dissolved nitrogen dioxide.]

Products:

• Fe(NO₃)₃ – Iron(III) nitrate
  • Other names: Ferric nitrate , Nitric acid , Iron(3+) salt , Iron (III) nitrate
  • Appearance: Pale violet crystals | hygroscopic
• H₂SO₄ – Sulfuric acid
  • Other names: Oil of vitriol , Sulfuric acid, concentrated (> 51% and 100%) , H2SO4
  • Appearance: Clear, colorless liquid ; Odourless colourless oily hygroscopic liquid ; Colorless to tướng dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]
• NO₂ – Nitrogen dioxide
  • Other names: Nitrogen(IV) oxide , Deutoxide of nitrogen , Nitrogen peroxide
  • Appearance: Brown gas ; Reddish-brown gas or brown or yellow liquid with pungent odour ; Yellowish-brown liquid or reddish-brown gas (above 70°F) with a pungent, acrid odor. [Note: In solid khuông (below 15°F) it is found structurally as N2O4.]
• H₂O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide
  • Appearance: White crystalline solid, almost colorless liquid with a hint of xanh rờn, colorless gas