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Hydrolysis of Fe(OH)SO 4 in the presence of metallic iron
Author(s) -
Mahapatra Sipra,
Prasad Turaga P.
Publication year - 1992
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280530216
Subject(s) - hydrolysis , enthalpy , chemistry , metal , inorganic chemistry , activation energy , hydrolysis constant , kinetics , reaction rate constant , thermodynamics , organic chemistry , physics , quantum mechanics
Hydrolysis of Fe(OH)SO 4 was carried out in the presence of metallic iron in order to prevent the formation of iron(III) oxides with strongly bonded sulphate. Under the conditions of the experiment, the products were found to be mixtures of ϵ‐Fe 2 O 3 and α‐FeOOH. The occluded sulphate, if any, could be easily washed out with water. The hydrolysis reaction passes through an equilibrium state before coming to completion. The entropy with enthalpy of the hydrolysis corresponding to the equilibrium state were found to be 4 e.u. and 0·5 kJ/mol, respectively. The activation energy of the hydrolysis reaction was found to be 21 kJ/mol.