Precipiate reaction

Precipiate reaction
When a gas burner heats the steam coil strongly, the steam becomes superheated and is at a high enough temperature to ignite a match and react quickly with steel wool. The equation for the fast reaction of superheated steam with iron is given.
Chart: Fast Reaction









>180 oC





2Fe + 3H2O(g )



-->

Fe2O3 + 3H2(g )

Iron(III) Oxide (Fe2O3) AKA Hematite, Rust
Colour: Red-brown
Molecular Weight: 159.69
Melting Point: Decomposition at 1565C
Density 5250kg/m3

iron react with water at beginning will appear green color and then brown yellow color.