Quicklime: Properties & Uses for Drying Gases

In summary, quicklime is a chemical compound made of calcium and oxygen. It is a white, caustic, alkaline solid with a high melting point and reactivity. Some common uses of quicklime include drying gases, production of cement, steel, and paper, and neutralizing acidic soil. Quicklime can also be used as a disinfectant and in the production of glass and sugar. When exposed to gases, it reacts with water to dry them. Quicklime should be handled with care and stored in a dry place away from moisture.
  • #1
Fly_High
23
0
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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  • #2
You have answered your own question. Sulfur dioxide and quicklime will react to make calcium sulfate, CO2 also reacts.
 
  • #3
Thanks jim. :)
 

1. What is quicklime?

Quicklime, also known as calcium oxide (CaO), is a chemical compound made of calcium and oxygen.

2. What are the properties of quicklime?

Quicklime is a white, caustic, alkaline solid with a melting point of 2,613°F (1,435°C). It is highly reactive and can cause severe skin and eye irritation if not handled properly. Quicklime also has a high affinity for water and will react vigorously with it to form calcium hydroxide (Ca(OH)2) and release heat.

3. What are the uses of quicklime?

One of the main uses of quicklime is for drying gases. It is also used in the production of cement, steel, and paper, as well as in agriculture to neutralize acidic soil and in water treatment to remove impurities. Quicklime can also be used as a disinfectant and in the production of glass and sugar.

4. How does quicklime dry gases?

When quicklime is exposed to gases, it reacts with the water vapor present in the gas to form calcium hydroxide (Ca(OH)2). This reaction, known as slaking, releases a large amount of heat, which causes the water to evaporate from the gas, effectively drying it. The resulting calcium hydroxide can then be removed from the gas.

5. How should quicklime be handled and stored?

Quicklime should be handled with care as it is a highly reactive and caustic substance. Protective gear, such as gloves and goggles, should be worn when handling it. It should be stored in a dry place away from water and moisture. Quicklime should also be kept in a sealed container to prevent it from reacting with the surrounding air.

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