Quicklime: Properties & Uses for Drying Gases

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Quicklime is effective for drying gases due to its basic properties, but it cannot dry acidic gases like sulfur dioxide and carbon dioxide. The reason for this limitation is that quicklime reacts with these acidic gases, forming calcium sulfate and other compounds. This reaction results in the neutralization of the acidic gases rather than their drying. Understanding these chemical interactions is crucial for effective gas treatment processes. Quicklime's role in gas drying is thus limited to non-acidic gases.
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Quicklime is used to dry gases.It is also basic in nature. It cannot be used to dry acidic gases such as sulphur dioxide and carbon dioxide.

Why is this so? Is it because alkali (quicklime) will react with the acidic gases to form salt and water?

Please help. Thanks. :smile:
 
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You have answered your own question. Sulfur dioxide and quicklime will react to make calcium sulfate, CO2 also reacts.
 
Thanks jim. :)
 
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