The redox potential of a soil is -250 mV.Which of the following forms of the pertinent elements would you expect to find in the soil? A)NO₃^- B)SO₄^2- C)Fe²⁺ D)Mn⁴⁺ E)CO₂

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A negative redox potential (-250 mV) indicates reducing conditions in the soil. Under such conditions, iron (Fe) is expected to be in its reduced form, which is Fe(II), as indicated in option C.

The Redox Potential of a Soil Is -250 MV