Based on the sample calculation, the CEC of the soil was 50.8 meq/100g and the equivalent...
Based on the sample calculation, the CEC of the soil was 50.8 meq/100g and the equivalent weight of Ca2+ (one of the base cations) extracted by ammonium acetate solution was 3.13 meq/100g.
The ammonium acetate solution also contains 150 mg K+/L, 75 mg Na+/L, and 83 mg Mg2+/L. calculate the equivalent weight of K+, Na+, and Mg2+ in a 5 g soil: 35 mL extractant. Given all these values, compute the base saturation of the soil.
Homework Answers
Add Answer to:
Based on the sample calculation, the CEC of the soil was 50.8
meq/100g and the equivalent...
What is the ESP (exchangeable sodium percentage) for a soil sample having 25 meq/100g CEC and...
What is the ESP (exchangeable sodium percentage) for a soil sample having 25 meq/100g CEC and exchangeable Ca, Mg, K and Na contents of 15, 3.5, 1.5 and 5.0 meq/100g respectively? Is this sample likely to be considered a "sodic soil"? It has a pH of 9.2.
Please Answer: CALCULATION QUESTION 1 (A) Calculate the number of cmol of Al3+ cations needed to...
Please Answer: CALCULATION QUESTION 1 (A) Calculate the number of cmol of Al3+ cations needed to replace 10 cmolc of Ca2+ by cation exchange in a soil. (B) How many grams of Al3+ does this correspond to? (you’ll need the atomic weight of Al, which is 27 g/mol, to calculate this) CALCULATION QUESTION 2 A soil sample (500 g) contains the following amounts of exchangeable cations: Ca2+= 9 cmolc , Mg2+= 3 cmolc , K+= 1 cmolc , Al3+= 3...
Soil testing laboratories usually estimate cation-exchange capacity (CEC) as the sum of Ca2", Mg, and K...
Soil testing laboratories usually estimate cation-exchange capacity (CEC) as the sum of Ca2", Mg, and K displaced during extractions with neutral, 1 N ammonium acetate (NH 0Ac), which are performed primarily to test for available K. The following data were thereby obtained for three contrasting soils, but have been reported as pounds per acre for each of the three elements, assuming the conventional weight of 2 million pounds for an acre of soil 6 inches deep. Soil A 4004 381...
help with cation exchange capactity question 16. Suppose that 1 g of dry soil is mixed...
help with cation exchange capactity question
16. Suppose that 1 g of dry soil is mixed vigorously with 100 ml of 0.5 ammonium acetate solution. The soil and water mixture is filtered to remove the soil. The concentrations of calcium, magnesium and potassium ions are as follows: [Ca225.8 ug/ml [Mg2-3.4 ug/ml [K*] 2.2 ug/ml The concentration of Na* was below the detection limit What is the cation exchange capacity (CEC) of the soil (in units of cmol kg1)? Assume a...
What is the cation exchange capacity (in meq/100 g) and base saturation (in %) of a...
What is the cation exchange capacity (in meq/100 g) and base saturation (in %) of a 200 g soil sample that contains the following amounts of exchangeable cations: 360mg Ca 2+, 46mg Na+, 312mg K+, 216mg Mg2+, 100mg Al3+, and 20mg H+. Use the following molar weights: Ca2+= 40.1 g/mol; Na+= 23.0 g/mol; K+= 39.1 g/mol; Mg2+= 24.3 g/mol; Al3+= 27 g/mol and H+ is 1 g/mol.
Exactly 1.5g of soil is saturated with 100 mL of 1 M KCl. At the end...
Exactly 1.5g of soil is saturated with 100 mL of 1 M KCl. At the end of the saturation, the solution is analyzed, and the following results obtained: Ca = 0.50 mg/L; Mg = 1 mg/L; Na = 1.5mg/L; Al = 2 mg/L. If this represent all of the exchangeable ions that were initially on the soil, what is the CEC and Base Saturation in men/100g?
help with cation exchange capactity question 16. Suppose that 1 g of dry soil is mixed...
help with cation exchange capactity question
16. Suppose that 1 g of dry soil is mixed vigorously with 100 ml of 0.5 ammonium acetate solution. The soil and water mixture is filtered to remove the soil. The concentrations of calcium, magnesium and potassium ions are as follows: [Ca225.8 ug/ml [Mg2-3.4 ug/ml [K*] 2.2 ug/ml The concentration of Na* was below the detection limit What is the cation exchange capacity (CEC) of the soil (in units of cmol kg1)? Assume a...
The highlighted questions worked out please! Tools Window Help 80%-) Fri Mar 23 5: Problem.Set.ll.Chap.8.9.10.2018.pdf (1...
The highlighted questions worked out please!
Tools Window Help 80%-) Fri Mar 23 5: Problem.Set.ll.Chap.8.9.10.2018.pdf (1 page) -Edited v 순 Q Search 2. All exchangeable cations on a 30-g soil were displaced by NH4. Then NH4 was displaced by K* and NH4 was determined to be 60 mg in solution. Calculate the CEC (cmolokg) of the soil. The cations on an exchangeable sites of a 30 g soil were displaced by repeatedly washing by a salt and found to be...
a) Suppose that 1 g of dry soil is mixed vigorously with 100 mL of 0.5 M ammonium acetate solution. The soil and water mixture is filtered to remove the soil. The concentrations of calcium, magn...
a) Suppose that 1 g of dry soil is mixed vigorously with 100 mL of 0.5 M ammonium acetate solution. The soil and water mixture is filtered to remove the soil. The concentrations of calcium, magnesium, potassium, and hydrogen ions in the filtrate are measured. The concentrations of the cations found in the extraction solution are as follows: Ca2+-25.8 μg/mL, Mg2 3.4 ug/mL, K -2.2 ug/mL. Calculate the CEC of the soil. This is the same problem from Discussion 2....
Soil testing laboratories usually estimate cation-exchange capacity (CEC) as the sum of Ca2", Mg, and K displaced during extractions with neutral, 1 N ammonium acetate (NH 0Ac), which are performed primarily to test for available K. The following data were thereby obtained for three contrasting soils, but have been reported as pounds per acre for each of the three elements, assuming the conventional weight of 2 million pounds for an acre of soil 6 inches deep. Soil A 4004 381...
help with cation exchange capactity question
16. Suppose that 1 g of dry soil is mixed vigorously with 100 ml of 0.5 ammonium acetate solution. The soil and water mixture is filtered to remove the soil. The concentrations of calcium, magnesium and potassium ions are as follows: [Ca225.8 ug/ml [Mg2-3.4 ug/ml [K*] 2.2 ug/ml The concentration of Na* was below the detection limit What is the cation exchange capacity (CEC) of the soil (in units of cmol kg1)? Assume a...
help with cation exchange capactity question
16. Suppose that 1 g of dry soil is mixed vigorously with 100 ml of 0.5 ammonium acetate solution. The soil and water mixture is filtered to remove the soil. The concentrations of calcium, magnesium and potassium ions are as follows: [Ca225.8 ug/ml [Mg2-3.4 ug/ml [K*] 2.2 ug/ml The concentration of Na* was below the detection limit What is the cation exchange capacity (CEC) of the soil (in units of cmol kg1)? Assume a...
The highlighted questions worked out please!
Tools Window Help 80%-) Fri Mar 23 5: Problem.Set.ll.Chap.8.9.10.2018.pdf (1 page) -Edited v 순 Q Search 2. All exchangeable cations on a 30-g soil were displaced by NH4. Then NH4 was displaced by K* and NH4 was determined to be 60 mg in solution. Calculate the CEC (cmolokg) of the soil. The cations on an exchangeable sites of a 30 g soil were displaced by repeatedly washing by a salt and found to be...
a) Suppose that 1 g of dry soil is mixed vigorously with 100 mL of 0.5 M ammonium acetate solution. The soil and water mixture is filtered to remove the soil. The concentrations of calcium, magnesium, potassium, and hydrogen ions in the filtrate are measured. The concentrations of the cations found in the extraction solution are as follows: Ca2+-25.8 μg/mL, Mg2 3.4 ug/mL, K -2.2 ug/mL. Calculate the CEC of the soil. This is the same problem from Discussion 2....
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago