A Soil Has a Maximum Potential Cation Exchange Capacity of 30

question 7

Multiple Choice

A soil has a maximum potential cation exchange capacity of 30 cmol_c/kg and has a 50% acid saturation.If you want to decrease the percentage acid saturation to 10%,how many cmol_c of calcium would it take to replace the exchangeable acid cations per kg of soil? Assume all the calcium exchanged with aluminum.

• A)30
• B)40
• C)6
• D)12
• E)5

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