Soil Chemistry problem
You have a 1 L solution of .1 M Fe(NO3)3 to which you add sufficient base to precipitate all Fe from the solution according to the following reaction: Fe(+3 charge) + 3 OH --> Fe(OH)3(solid).
A. what quantity of the solid, in moles and grams, is produces following precipitation? heatig the suspension of the amorphous iron oxyhydroxide, Fe(OH)2, at 90 degrees C transform it into the crystalline iron oxide hematite (Fe2O3).
B) How much hematite is produced (in moles and grams) for the suspension described above?
c) write an expression that describes the chemical transformation from Fe(OH)3 to Fe2O3 and calculate the excess moles of H2O produced during crystallization of this suspension. Atomic weight: Fe, 55.8g/mole; O, 16 g/moles; H, 1 g/moles.