A soil that is 30%clay, 7% organic matter will have an estimated CEC of what?

A. 37

B. 38

C. 210

D. 254

A. 37

Explanation:

As CEC of soil can be maintained by the type of caution exchange from soil like Na, K, thus decrease of H + ions increase the variable charges and thus increasing the capacity, Histosols, Mollisols, and vertisols have a high CEC order. And clay consists of roughly composed chlorite, kaolinite, and most of soil humus.