If you had a soil with apH of 735 % clay2% organic matterCEC of 41 cmolc/kg soil1) Assuming the clay was of one type, could you calculate the CEC of just the clay fraction AND based on the CEC value calculated, could you determine which type of clay mineral is in my soil?Colloid TypeCEC cmolc/kg pH= 7Main type of chargeOrganic matter200pH dependent Vermiculite150PermanentSmectite100PermanentMica30PermanentChlorite30PermanentKaolinte8pH dependentFe/Al oxides+5pH dependent2) Using the given information and the provided table, please provide both the CEC and clay you would expect to provide that charge.

Soil can be defined as the top layer of the Earth's crust that supports plant growth. It is a…

Answered: If you had a soil with a pH of 7 35 %…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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Question

If you had a soil with a

pH of 7
35 % clay
2% organic matter
CEC of 41 cmolc/kg soil

1) Assuming the clay was of one type, could you calculate the CEC of just the clay fraction AND based on the CEC value calculated, could you determine which type of clay mineral is in my soil?

Colloid Type	CEC cmol_c/kg pH= 7	Main type of charge
Organic matter	200	pH dependent
Vermiculite	150	Permanent
Smectite	100	Permanent
Mica	30	Permanent
Chlorite	30	Permanent
Kaolinte	8	pH dependent
Fe/Al oxides	+5	pH dependent