SEARCH Articles Figures Tables Calculated Changes in pe, pH and Fe During Soil Reduction Electrode Potentials and Gibbs Energy Changes for Oxidation-Reduction Reactions Free energy changes from oxidation/reduction Gibbs energy change for oxidation-reduction reactions Heme reduction, absorbance changes Oxidation-reduction potential changes Oxidation-reduction reaction (redox changes Oxidation-reduction reactions Gibbs energy changes Oxidation-reduction reactions free energy change Oxidation-reduction reactions spontaneous change REACTIONS WITH CHANGE OF VALENCY OXIDATION AND REDUCTION Redox changes Reduction Reduction change in oxidation state Reduction to Two-Component Form and Picture Change Artifacts Reduction with Phase Change Reduction without Phase Change Structural change on reduction. Ordering of defects Surface area changes during reduction Waste reduction process changes