The principle of quicklime as a desiccant, what is the chemical equation for quicklime to be used as

Quicklime, also known as calcium oxide, is characterized by the fact that it can absorb moisture in the air, so it is often used as a desiccant to form calcium hydroxide after absorbing water. The main component of quicklime is calcium oxide, that is, CAO, which can chemically react with water to produce mature lime (calcium hydroxide), and the hydrated lime is placed in the air, and can undergo a new chemical reaction with carbon dioxide in the air to generate stable calcium carbonate.

Quicklime, also known as burnt lime, is mainly composed of calcium oxide (chemical formula: CAO).

Calcium oxide can absorb water to form calcium hydroxide, so it can be used as a desiccant, and the chemical equation of the reaction is: CaO+H2O=Ca(OH)2.

Quicklime can be used as a filler, for example: as a filler for epoxy adhesives; It can also be used for acid wastewater treatment and sludge conditioning.

Quicklime is calcium oxide, Cao, calcium hydroxide that becomes mature lime when exposed to water, Ca(OH)2.

It needs to be heated to decompose hydrated lime to reduce it, but to prevent direct burning by the flame, it will become calcium carbonate and caCO3, although it can also be reduced to quicklime, but the temperature is high.

It is not scientific to use quicklime to prevent moisture in the damp house, because the moisture is flowing, and it reaches equilibrium, even if it prevents a lot, it cannot be dried, and it is over as soon as the window is opened, because the absorption of the components in the gas by the solid is very slow.

Quicklime is calcium oxide that reacts with water to form calcium hydroxide. So he can be used as a desiccant, and he himself is able to absorb water. The resulting calcium hydroxide also absorbs water.

The chemical equation for quicklime to be used as a desiccant is CA + H2O ==Ca(OH)2.

The principle of quicklime as a desiccant is that quicklime can become mature lime after absorbing water, and the chemical reaction formula is CaO+H2O=Ca(OH)2, and the generated calcium hydroxide can react with carbon dioxide in the air to generate calcium carbonate and water.

Precautions for dry storage of quicklime

1. When using, the desiccant should be placed in a bag or box with the protected items. For better use of it, it is recommended to seal it with a protected item.

2. The used desiccant should not be exposed to the air for more than 2 hours. It should be sealed and stored in ready for use.

3. Chemical experiments need to determine the quality of the desiccant, mainly referring to the adsorption capacity. Others should pay attention to the temperature and pressure in the laboratory, which is directly related to the effect of the desiccant.

4. Keep out of reach of children.

The above content refers to Encyclopedia-Lime Desiccant.

QuicklimeThe chemical reaction equation for desiccant is as follows:

The chemical reaction equation of quicklime as a desiccant.

The principle of quicklime as a desiccant is that quicklime can absorb moisture in the air, and quicklime will generate calcium pro-oxide after absorbing water, which can react with carbon dioxide in the air to generate calcium carbonate and water.

The principle of raw lime as a desiccant is that quicklime can absorb moisture in the air, and quicklime will generate calcium oxide after absorbing water, which can react with carbon dioxide in the air to form calcium carbonate and water, so after a period of use, the quicklime desiccant needs to be replaced, otherwise its own bucket ruler will evaporate water and increase air humidity.

Because quicklime, that is, calcium oxide, is characterized by the fact that it can absorb moisture in the air, it is often used as a desiccant to generate calcium hydroxide after absorbing water. 1. The reason why quicklime is used as a desiccant Because quicklime - calcium oxide (CAO) can react with moisture in the air.

The principle of quicklime as a desiccant is that quicklime can absorb moisture in the air, and quicklime will generate calcium oxide after absorbing water, which can react with carbon dioxide in the air to produce calcium carbonate and water, so after a period of use, the quicklime desiccant needs to be replaced, otherwise it will evaporate water and increase air humidity. <

The principle of quicklime as a desiccant is that quicklime can absorb moisture in the air, and quicklime will generate calcium oxide after absorbing water, which can react with carbon dioxide in the air to produce calcium carbonate and water, so after a period of use, the quicklime desiccant needs to be replaced, otherwise it will evaporate water and increase air humidity.

The principle of quicklime as a desiccant is that quicklime can absorb moisture in the air, and quicklime will generate calcium hydroxide after absorbing water, which can react with carbon dioxide in the air to form calcium carbonate and water.

The main component of quicklime is calcium oxide, or CAO, which can chemically react with water to produce mature lime (calcium hydroxide). cao+h2o=ca(oh)2

Hydrated lime is placed in the air, and it can undergo a new chemical reaction with carbon dioxide in the air to produce stable calcium carbonate. ca(oh)2+co2=caco3↓+h2o。

Quicklime is usually made by calcining natural rock, which is mainly composed of calcium carbonate, at high temperatures to decompose carbon dioxide and calcium oxide.

All natural rocks with calcium carbonate as the main component, such as limestone, chalk, dolomitic limestone, etc., can be used to produce lime. In coastal areas, it is useful to use shells such as Ming Xiao shells as raw materials, which are burned into shell ash and used as quicklime.

Quicklime is a commonly used desiccant to remove water vapor by chemical absorption, and is also used for steel, pesticides, medicines, desiccant, tanning and alcohol dehydration. It is especially suitable for puffed food, shiitake mushroom, fungus and other local locust residue products, as well as instrumentation, medicine, clothing, electronic telecommunications, leather, textile and other industries.

Because of quicklime its component calcium oxide, calcium oxide is very soluble in water, and the temperature of the oxidant mixed with water will increase and release heat, so that it can absorb water and dry the air.

Uses of quicklimeIn addition to being used as a desiccant, quicklime also has the following uses:

1. It can be used as a filler, such as a filler for epoxy adhesives.

2. Used as raw materials, it can be used to manufacture calcium carbide, soda ash, bleaching powder, etc.

3. It can be used as a flux for building materials, metallurgical flux, cement quick-setting agent, and phosphor.

4. Used as vegetable oil decolorizing agent, drug carrier, soil amendment and calcium fertilizer.

5. It is used for acid wastewater treatment and sludge conditioning.

6. It can also be used as a boiler deactivation protectant, and the moisture absorption ability of lime can keep the metal surface of the boiler water vapor system dry and prevent corrosion.