Be able to define an acid.
-:- Any substance that increases the hydrogen ion concentration in a solution.
Know the two ions considered acids in soils.
-:- Hydrogen (H+) and Aluminum (Al3+).
Understand how aluminum contributes to soil acidity
-:- Hydrolosis.
Al(H2O)6 3+ = Al(H2O)5(OH) 2+ an...
Understand the meaning of % base saturation with respect to soil acidity.
✓ -:- an expression of the relative amounts of non-acidic cations to acid cations on
the exchange sites. (exchangeable bases/CEC).
Understand why many Florida soils tend to be acidic.
✓ -:- Due to low base saturation and the weathering of soils which releases Al3+.
Be able to define a base.
✓ -:- Any substance that decreases the hydrogen ion concentration of a solution.
Be able to identify the most common base used to raise pH and how it works to change
solution pH.
✓ -:- Calcium carbonate
Ca dissociates from CO3 and binds with H+ with CO3 to make bicarbonate and neutralizes
2|Page | Grade A+| 2024/2025
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