Calcium hydroxide is used to neutralise acidic soil's.Explain using an ionic equation,why calcium hydroxide can neutralise acidic soil's?
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Calcium hydroxide is a strong base and rapidly ionizes to Ca⁺⁺ and OH⁻ ions. The calcium ions replace absorbed H ions on the soil colloid and thereby neutralize soil acidity.
The carbonic acid formed (H₂CO₃) is a weak acid and partially ionizes to H⁺ and CO₂⁻² ions.
Therefore, the net effect is that more Ca than H ions are released in the soil, and consequently, soil acidity is neutralized.
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