2 KMnO4 + 5 SO2 + 2 H2O → K2SO4 + 2 MnSO4 + 2 H2SO4

Reactants:

• KMnO4 – Potassium manganate(VII)
  • Other names: Potassium permanganate , Chameleon mineral , Condy's crystals ... show morePermanganate of potash Hypermangan , Permanganic acid potassium salt show less
  • Appearance: Purplish-bronze-gray needles | magenta–rose in solution ; Dark purple crystals
• SO2 – Sulfur dioxide
  • Other names: Sulfurous anhydride , Sulphur dioxide , Sulfurous acid anhydride ... show moreSulfurous oxide , Sulfur oxide , Sulphur dioxide , sulfur dioxide , SO2 , R-764 show less
  • Appearance: Colorless gas ; Colourless gas or compressed liquefied gas with pungent odour ; Colorless gas with a characteristic, irritating, pungent odor. [Note: A liquid below 14°F. Shipped as a liquefied compressed gas.]
• H2O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas

Products:

• K2SO4
  • Names: Potassium sulfate , Potassium sulphate , Dipotassium sulfate ... show moreKaliumsulfat , K2SO4 , Sulfuric acid dipotassium salt show less
  • Appearance: White solid ; Colourless-to-white crystals
• MnSO4 – Manganese(II) sulfate
  • Other names: MnSO4 , Manganese sulfate anhydrous , Manganese sulphate ... show moreManganous sulfate , Manganese monosulfate , Manganese(2+) sulphate , Manganese(II) sulphate , Manganese(2+) sulfate , Manganese sulfate show less
  • Appearance: White crystals (anhydrous) | pale pink solid (hydrates)
• H2SO4 – Sulfuric acid
  • Other names: Oil of vitriol , Sulfuric acid, concentrated (> 51% and < 100%) , H2SO4 ... show moreSulphuric acid , Battery acid , Hydrogen sulfate , [SO2(OH)2] , [S(OH)2O2] , Sulfuric acid (aqueous) show less
  • Appearance: Clear, colorless liquid ; Odourless colourless oily hygroscopic liquid ; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]