Question

why acids and bases are somtimes added to soil
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Answer 1

Answer:

Soils become acidic when basic elements such as calcium, magnesium, sodium and potassium held by soil colloids are replaced by hydrogen ions. Soils formed under conditions of high annual rainfall are more acidic than are soils formed under more arid conditions.

Explanation:

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Answer 2

Acids and bases are sometimes added to increase the fertility of the soil.

• Overuse of chemical fertilisers in fields causes the soil to become acidic, which is bad for plant growth.
• More acidity or basicity in the soil reduces its fertility.
• Soil is treated with quick lime or slaked lime to lessen soil acidity.
• If the soil is basic, manure—an organic product—is mixed in with the soil.
• When hydrogen ions replace the basic elements calcium, magnesium, sodium, and potassium contained by soil colloids, soils turn acidic.
• In comparison to soils created under more arid conditions, soils formed under conditions of significant annual rainfall are more acidic.
• When the soil is either too acidic or too basic, plants do not grow well. When a soil is overly acidic, bases like quick lime (calcium oxide) or slaked lime are used to neutralise the acidity (calcium hydroxide). Organic matter (compost) is added to the soil if it is a basic one.

Hence, acids or bases are added to soil sometimes.

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