A 1 kg soil sample has 2 cmol_c of Al³⁺ on the exchange complex. Addition of which of the following would most effectively replace about half of this Al?

Question

Quizplus · Accepted Answer

Ca²⁺ has a higher charge than Na⁺ or K⁺, making it more effective at displacing Al³⁺ from the exchange complex. 4 cmol_c of Ca²⁺ can replace about half of the 2 cmol_c of Al³⁺ due to its divalent nature.

A 1 Kg Soil Sample Has 2 Cmolc of Al3+

A 1 Kg Soil Sample Has 2 Cmol_c of Al³⁺