Rocks And Soils: Their Origin, Composition And Characteristics: Chemical, Geological And Agricultural
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The two forms in which iron fundamentally exists in the soil are as the protoxide FeO and the sesquioxide Fe^O, ; and the entire character and value of a soil may be dependent on the question of the existence of one or of the other of these two iron oxides.
The affinity of iron for oxygen is such (iron oxidizes so readily) that the protoxide can exist only in the absence of sufficient oxygen to form the higher oxide. Wherever access of abun- dance of atmospheric air exists, there the sesquioxid...e is found ; but where this sufficiency is lacking, in the deeper soil-strata, there the lower oxide is found ; seldom, however, in a free con- dition, but combined with acids to form salt of the protoxide.
A most important fact, however, is the frequent reduction of the higher to the lower oxide in the soil. Organic compounds decomposing in presence of oxygen-containing compound's possess the property of attracting the oxygen from the metallic oxide, or reducing the same. This is the principle in the use ORIGIN AND COMPOSITION OF SOILS.
What to read after Rocks And Soils: Their Origin, Composition And Characteristics: Chemical, Geological And Agricultural?
You can find similar books in the "Read Also" column, or choose other free books by Stockbridge, Horace E. (Horace Edward), 1857-1930 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The two forms in which iron fundamentally exists in the soil are as the protoxide FeO and the sesquioxide Fe^O, ; and the entire character and value of a soil may be dependent on the question of the existence of one or of the other of these two iron oxides.
The affinity of iron for oxygen is such (iron oxidizes so readily) that the protoxide can exist only in the absence of sufficient oxygen to form the higher oxide. Wherever access of abun- dance of atmospheric air exists, there the sesquioxid...e is found ; but where this sufficiency is lacking, in the deeper soil-strata, there the lower oxide is found ; seldom, however, in a free con- dition, but combined with acids to form salt of the protoxide.
A most important fact, however, is the frequent reduction of the higher to the lower oxide in the soil. Organic compounds decomposing in presence of oxygen-containing compound's possess the property of attracting the oxygen from the metallic oxide, or reducing the same. This is the principle in the use ORIGIN AND COMPOSITION OF SOILS.
What to read after Rocks And Soils: Their Origin, Composition And Characteristics: Chemical, Geological And Agricultural?
You can find similar books in the "Read Also" column, or choose other free books by Stockbridge, Horace E. (Horace Edward), 1857-1930 to read onlineMoreLess
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