This is an acid-base reaction (neutralization): H2SO4 is an acid, Fe2O3 is a base.
Reactants:
- 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 dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]
- Fe2O3 – Iron(III) oxide
- Other names: Ferric oxide , Hematite , Ferric iron
- Appearance: Red-brown solid ; Reddish brown-to-black crystals or powder ; Reddish-brown solid. [Note: Exposure to fume may occur during the arc-welding of iron.] ; A fine, red powder of ferric oxide. [Note: Usually used in cake form or impregnated in paper or cloth.]
Products:
- Fe2(SO4)3 – Iron(III) sulfate
- Other names: Ferric sulfate , Sulfuric acid , Iron(3+) salt (3:2)
- Appearance: Grayish-white crystals
- 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 blue, colorless gas