Types of Chemical Weathering

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Be able to recognize the type of biogeochemical weathering based on the given equation

Last updated 8:43 PM on 9/7/26

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CaCO₃ + 2 HCl → H₂CO₃ + CaCl₂

dissolution, replacement reaction with calcite

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Fe²⁺ → Fe³⁺

oxidation/reduction, change in ion charge with Fe, Mn, or S

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5 Fe₂O₃ + 9 H₂O → Fe₁₀O₁₅*9H₂O

hydration, water added into mineral structure of hematite

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KAlSi₃O₈ + H₂O → HAlSi₃O₈ + K⁺ + OH^-

hydrolysis, water is reactant and breaks into H and OH ions, affects soil pH, cation creation

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Solid + Organic Acid → New Solid + Mineral-Organic Complex

complexation, uses oxalic citric or tartaric acid