Q784
The cation exchange capacity of a mineral soil containing pre-dominately kaolinitic clay minerals generally ranges between
A.
3 - 15 meq per 100 gm soil
AnswerB.
15 - 40 meq per 100 gm soil
C.
80 - 100 meq per 100 gm soil
D.
More than 100 meq per 100 gm soil
Answer: Option A
Solution
Answer: Option A
Solution:
The cation exchange capacity of a mineral soil containing pre-dominantly kaolinitic clay minerals generally ranges between 3 - 15 meq per 100 gm soil.Cation exchange capacity is the amount of a cation that can be exchanged by another cation on the surface of a clay mineral. It is expressed in cmol (+) per kg which is numerical to meq per 100g, where mol (+) represents moles of electrical charge.