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Explain the advantages of using slaked lime instead of powdered limestone for neutralising acidic soil?
Wiki User
โ 13y ago
Slaked lime is much more alkaline and effective at reducing acidity quickly - it is Ca(OH)2
whereas powdered limestone is CaCO3 and not as alkaline/basic. CO2 is also given off when the limestone reacts with the acid. Water is given of when slaked lime reacts.
Mathematically it takes 100 g of limestone to 73g of HCl (as an example) where it would take only 74g of slaked lime per 73g HCl.
Wiki User
โ 13y ago
Slaked lime works faster to neutralize acidic soil because it is already in a hydrated form, allowing for quicker reaction with the soil. It also provides an immediate source of calcium which helps improve soil structure. Additionally, slaked lime is more readily available for plant uptake, making it a more efficient option for remedying acidic soil.
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Explain why powdered limestone is also used in the chimneys at power stations?
Powdered limestone is used in power station chimneys to remove sulfur dioxide (SO2) from the flue gases produced during combustion. When sulfur dioxide reacts with the limestone, it forms calcium sulfate which can be easily removed, reducing air pollution. This process, known as flue gas desulfurization, helps to comply with environmental regulations and minimize the emission of harmful pollutants into the atmosphere.
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