Reaction between ilmenite and H2SO4?

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SUMMARY

The discussion centers on the reaction between ilmenite (FeTiO3) and sulfuric acid (H2SO4), highlighting that FeTiO3 is an idealized formula and does not exist as a pure compound. The actual components of ilmenite include TiO2, FeO, and Fe2O3, which react with sulfuric acid to produce TiOSO4, FeSO4, and Fe2(SO4)3, respectively. The participant questions the omission of Fe2(SO4)3 in the summarized reaction and suggests recalculating the enthalpy of reaction using the individual reactions of TiO2, FeO, and Fe2O3, weighted by their composition percentages in ilmenite.

PREREQUISITES
  • Chemical reaction equations
  • Understanding of enthalpy and enthalpy of formation
  • Knowledge of mineral composition and ore processing
  • Familiarity with sulfuric acid reactions
NEXT STEPS
  • Study the enthalpy of reaction calculations for complex ore compositions
  • Research the individual reactions of TiO2, FeO, and Fe2O3 with sulfuric acid
  • Explore the thermodynamics of acid-base reactions in mineral processing
  • Investigate the properties and applications of TiOSO4 and FeSO4 in industry
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Chemistry students, mineral processing engineers, and researchers in hydrometallurgy looking to understand the reactions of ilmenite with sulfuric acid and the implications for enthalpy calculations.

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Homework Statement


FeTiO3+2H2SO4=FeSO4+TiOSO4+2H2O
FeTiO3 is an idealized formula of an ore and hence the chemical compound doesn't exist. FeTiO3 consists of TiO2, FeO and Fe2O3. The reaction of each of these with sulfuric acid is as follows:

TiO2+H2SO4=TiOSO4+H2O
FeO+H2SO4=FeSO4+H2O
Fe2O3+3H2SO4=Fe2(SO4)3+3H2O

So why doesn't the summarized reaction have Fe2(SO4)3? I also calculated the enthalpy of reaction in the summarized equation using the enthalpies of formation of FeTiO3, H2SO4, TiOSO4, FeSO4 and H2O. Perhaps I should add up all the 3 bottom equations instead, taking into account the composition of the ore (53.2 percent TiO2, 18.1 percent Fe2O3, 28.7 percent FeO) to calculate the enthalpy of reaction?

Homework Equations

The Attempt at a Solution

 
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The idealized formula FeTiO3 = FeO⋅TiO2, it doesn't take into account existence of Fe(III) in the ore at all, so every attempt at calculating anything based on it is doomed.
 
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