Class Number_______
Agronomy 354 Problem Set 2
Spring 2016
Problem sets are due ca. one week after they are handed out in lecture. To receive full
credit (4 points each), work must be shown as to how the answer was obtained, the
correct answer must be written on the indicated line, the units of the answer must be
indicated and correct, and the assignment must be handed-in by the due date. Check
the course homepage for sample problems and solutions.
1. A soil solution contains 0.000000001 M H+. What is the soil pH?
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2. A soil solution has a pH of 6.3. What is the H+ concentration of the soil solution?
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3. A soil solution has a H+ concentration of 0.00006 M. What is the pH of this soil?
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4. What is the pOH of the soil in question #3?
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5. What is the percentage base saturation of a soil with these ions per 100 g: H = 2.2
meq, Ca = 11.4 meq, Al = 1.4 meq, K = 2.5 meq, Mg = 3.7 meq, and Na = 0.2 meq?
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