What are the properties of the reaction products of quicklime

Calcium hydroxide, the product of reaction with water, is alkaline and corrosive.

I think it refers to the reaction with water, which is alkaline.

The reaction of quicklime with water is that a large amount of heat is released to form a white precipitate calcium hydroxide.

The chemical formula should be: CaO+H2O=Ca(OH)2.

1. Lime chemical formula CAO is a common inorganic compound. The usual preparation method is to calcine the natural rock with calcium carbonate as the main component at high temperature, which can be decomposed to produce carbon dioxide and calcium oxide, and the natural rock with calcium carbonate as the main component, such as limestone, chalk, dolomitic limestone, etc., can be used to produce lime.

2. Quicklime reacts with water to form calcium hydroxide solution, commonly known as clarified lime water; Colorless phenolphthalein is dropped into it, and phenolphthalein turns red; quicklime is calcium oxide, and hydrated lime is calcium hydroxide; Gives off a lot of heat.

3. The reaction is divided into two types, one is to pour water into quicklime powder, and the other is to put quicklime into water. The first reaction phenomenon is that the water gradually boils and evaporates dry, and becomes gray and turbid in the middle; The second phenomenon is the gradual dissolution of lime and the generation of heat. This is all quicklime fully reacted to.

1. The name of the final solution obtained is calcium hydroxide solution, commonly known as clarified lime water.

2. Drop colorless phenolphthalein into it, and phenolphthalein will turn red.

3. Quicklime is calcium oxide, and hydrated lime is calcium hydroxide.

4. Emit a lot of heat.

Quicklime Introduction:

Also known as burnt lime, the main component is calcium oxide (CAO), which is usually made by calcining natural rocks with 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, shells are used as raw materials, which are fired into shell ash and used as quicklime.

Quicklime can also undergo chemical reactions with acidic gases such as carbon dioxide, sulfur dioxide, and sulfur trioxide, and the chemical reaction equation is as follows:

1. Quicklime reaction with carbon dioxide

Quicklime reacts with carbon dioxide.

2. Reaction between quicklime and sulfur dioxide:

Quicklime reacts with sulfur dioxide.

3. Quicklime reacts with sulfur trioxide

Quicklime reacts with sulfur trioxide.

1. Quicklime reacts with water to form calcium hydroxide Ca(OH)2.

Equation: cao+h2o=ca(oh)2

2. It can react with CO2 at high temperature to form CaCO3.

Equation: cao+co2=caco3

Introduction to the production process:

The original lime production process was to lay limestone and fuel (wood) in layers, and then calcined for a week. In modern times, mechanized and semi-mechanized vertical kilns, rotary kilns, boiling furnaces and other equipment are used for production.

The calcination time is also shortened correspondingly, and it only takes 2 to 4 hours to produce lime with rotary kiln, which can improve the production efficiency by more than 5 times compared with vertical kiln production. In recent years, there have been energy-saving processes and equipment such as cross-flow, double-slope and oil-fired circular vertical kilns and short-rotary kilns with preheaters, and the fuels have also been expanded to coal, coke, heavy oil or liquefied gas.

It can also react with CO2 at high temperature to form CaCO3

As well as reacting at high temperatures, CAO+3C=High temperature=CAC2+CO

What are the phenomena and applications of quicklime reaction with water.

Quicklime is an alkaline oxide that can react with acids or acidic oxides.

cao+so2=caso3

cao+2hcl=cacl2+h2o

What classes of substances can quicklime react with? Name two examples, and write the chemical equation? Quicklime is an alkaline oxide, which can react with acids or acidic oxides cao+so2=caso3 cao+2HCl=CaCl2+H2O, just find an acid.

For example: cao+h2so4=caso4+h2o, cao+h2co3=caCO3 +H2O chemical equation, also known as chemical reaction equation, is a formula that uses chemical formulas to express chemical reactions. Chemical equations reflect objective facts.

The formula that uses the chemical formula (organic matter in organic chemistry generally uses the simple structure formula) to express the chemical reaction of a substance is called a chemical equation. [1]

The chemical equation not only indicates the reactants, products, and reaction conditions. At the same time, the stoichiometric number represents the quantitative relationship between the reactants and the product substances, and the mass relationship between the substances can also be expressed through the relative molecular mass or relative atomic mass, that is, the mass ratio between the substances. For gas reactants and products, the volume ratio can also be obtained directly from the stoichiometric number.

Chinese name chemical equation.

Foreign name chemical equation

Also known as chemical reaction formula.

Discipline Chemistry. Domain-quality relationship.

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Writing steps. Take the chemical equation of thermal decomposition as an example:

The first chemical equation in history Jean Beguin 1615 The first step was to write the chemical formulas of reactants and products.

Step 2: Trim chemical formula.

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