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Acidic Soil ( pH is low) may be treated with lime, or crushed limestone.

Both these substances rect with the aciudic ions in soil to form a salt, water and carbon dioxide. #

Thereby increasing the pH to about '7'

If you see a farmer putting a white powder on fields, he is liming the field in order to increase the pH from acidic to a more neutral pH.

Here is the chemical eqution.

2H^(+) + CaCO3 = Ca^(2+) + H2O(l) + CO2(g).

NB They do NOT use an alkali, because in may produce an excess of alkali pH > 7.

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lenpollock

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1y ago

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