The first photo is the data, second photo is the question! thank you! We leached 200 g of our soil with 500 mL ofNH4CI. The collected solution contained:320 mg L-1Ca2+168 mg L-1Mg2+-1234 mg L-¹ K+8 mg L-1 H+144 mg L-1A13+ What is the CEC for this soil?Molecular weights of the ions are:40 g Ca²+mol-124 g Mg2+mol-139 g K+ mol-11 g Ht mol-127 g Al³+ mol1

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Answered: We leached 200 g of our soil with 500…

We leached 200 g of our soil with 500 mL of NH4CI. The collected solution contained: 320 mg L-1 Ca2+ 168 mg L-1 Mg2+ -1 234 mg L-¹ K+ -1 8 mg L-¹ H+ 144 mg L-1 A13+

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter31: Introduction To Analytical Separations

Section: Chapter Questions

Problem 31.1QAP

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Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

The first photo is the data, second photo is the question! thank you!

We leached 200 g of our soil with 500 mL of
NH4CI. The collected solution contained:
320 mg L-1
Ca2+
168 mg L-1
Mg2+
-1
234 mg L-¹ K+
8 mg L-1 H+
144 mg L-1
A13+

What is the CEC for this soil?
Molecular weights of the ions are:
40 g Ca²+
mol-1
24 g Mg2+
mol-1
39 g K+ mol-1
1 g Ht mol-1
27 g Al³+ mol
1

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Which CEC measurement did this calculation provide?
CEC resulting from permanent charge on clays
Total CEC at field pH levels
Potential (maximum) CEC

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