CBSE Class 7 Answered
Earlier I putted a question i.e. "
How soil gets basic in nature from agriculture? I mean that like soil gets acidic because of use of chemical fertilizers. But I would like to know the reason for getting basic in nature?" but someone gave me the wrong answer I don't want to know about neutralization reaction I already know it I want to know how soil becomes basic naturally just like soil gets acidic because of using excess chemical fertilizers. Here is the answer which was given to me by someone from this site he told me about neutralization I want reason of getting basic in nature because wanting it to get "
Ans: Soil acidity can be corrected or neutralized by liming the soil, or adding basic materials to neutralize the acid present. The most commonly used liming material is agricultural limestone. The limestone is not very water-soluble, making it easy to handle. As lime dissolves in the soil, calcium (Ca) moves to the surface of soil particles, replacing the acidity. The acidity reacts with the carbonate (CO 3 ) to form carbon dioxide (CO 2 ) and water (H 2 O). The result is a soil that is less acidic (has a higher pH) or basic."
Asked by Kashish Chhabra | 04 Aug, 2014, 07:38: PM
Expert Answer
- The soil may be acidic or basic naturally.
- But if there is an excess use of materials like quicklime(calicum oxide) or slaked lime(calcium hydroxide) or chalk(calcium carbonate), the pH of the soil can go up to 8.3.
- The alkalinity of the soil can be reduced by adding decaying matter (manure or compost) which contains acidic materials.
Answered by Vaibhav Chavan | 05 Aug, 2014, 11:58: AM
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