Cation Exchange Capacity (CEC)

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Balanced by Charge

Charge for Charge…..

NOT ion for ion

colloid

Ca 2+

+ 2K +

colloid

Also note: This is a reversible reaction

K +

+ Ca 2+

Balanced by Charge Charge for Charge….. NOT ion for ion colloid Ca 2+ + 2K + colloid Also note: This is a reversible reaction K + K + + Ca 2+

Cation Exchange Capacity (CEC) • Total amount of exchangeable cations that can be held by a given soil mass • Total CEC impacted by 1) Soil texture (amount of clay) 2) Clay type 3) Soil organic matter 4) pH

Page 1 and 2: Cation Exchange Capacity (CEC)
Page 3 and 4: Cation Exchange • cations move ou
Page 5: Strength of Hold & Likeliness of Ad
Page 9 and 10: CEC Factors—pH • pH affects the
Page 11 and 12: CEC/AEC and pH
Page 13 and 14: Finding CEC: Add charge given by ea
Page 15: Finding CEC: Adding CEC of each soi

Cation Exchange Capacity (CEC)

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