Why doesn t carbon dioxide react with calcium oxide

Calcium oxide reacts with carbon dioxide to form calcium carbonate, and when you add water, you isolate carbon dioxide from calcium oxide, which means that calcium oxide doesn't react with carbon dioxide, and the rate of this reaction changes, of course, to zero

When calcium oxide reacts with water to form calcium hydroxide, and then reacts with carbon dioxide From this point of view, water participates in the reaction process and changes the pathway of the reaction At the same time, there is no quantitative change before and after the reaction According to the definition of a catalyst, water can be said to be a catalyst

CO2 is an acidic oxide and CAO is a basic oxide, so they definitely react, but they are gas and solid reactions, which is a surface reaction.

However, after adding water, CAO reacts with water, and CO2 is also dissolved in water, and the contact surface is larger when reacting in the liquid state, so the reaction speed is faster, although it reacts with water, but their final product is still unchanged, and water can be said to be the catalyst for their reaction.

cao＋h2o＝ca(oh)2

Ca(OH)2+CO2=CaCO3 (Falling Symbol) H2O and then superimposed.

cao h2o co2 caco3 h2o and then the h2o on the left and right sides can be dated.

So it's CO2+cao caCO3

Carbon dioxide can only react with calcium hydroxide.

Calcium hydroxide is a product of the reaction of calcium oxide and water.

cao+h2o===ca（oh）2

The reaction conditions are high temperatures. Calcium oxide is not easy to interact with carbon dioxide at room temperature.

Direct reaction only at high temperatures (500 degrees Celsius.

The above will be directly reacted, and the reaction equation is: cao+co2=caco3. In addition, calcium oxide dissolves in water to form calcium hydroxide, which can react with carbon dioxide.

The reaction of calcium oxide and carbon dioxide can be divided into three cases:

1. In the case of drying, calcium oxide will not react with carbon dioxide.

2. In a high-temperature environment, cao+co2=caco3.

3. In a humid environment, the number of calfs cao+h2o=ca(oh)2;ca(oh)2+co2=caco3+h2o。

Calcium oxide. The chemical formula of calcium oxide is the absolute cao. The physical properties are white powder on the surface, and the impure ones are gray-white, gray or light yellow when they contain impurities, and they are hygroscopic.

Carbon dioxide. Carbon dioxide is a common compound in the air, and carbon reacts with oxygen to form its chemical formula CO2A carbon dioxide molecule is composed of two oxygen atoms and a carbon atom through covalent bonds, which is a colorless and odorless gas at room temperature, with a greater density than air, soluble in water, and reacts with water to form carbonic acid, which does not support combustion.

Solid carbon dioxide is commonly known as dry ice when compressed.

Carbon dioxide is believed to exacerbate the greenhouse effect.

Main**. Industrially it can be made of calcium carbonate.

It is prepared by decomposition under strong heat.

Calcium oxide reacts with carbon dioxide at high temperature, and the reaction equation is: cao + co = caco.

The essence of the reaction is that calcium oxide and water react first to form calcium hydroxide, and then calcium hydroxide reacts with carbon dioxide to form calcium carbonate and water. But without water, the reaction would not have taken place.

Calcium oxide is a basic oxide that is sensitive to moisture. It easily absorbs carbon dioxide and moisture from the air. It reacts with water to form calcium hydroxide and produces a lot of heat, which is corrosive.

It depends on the temperature. The lower the temperature, the more inclined it is to synthesize to form CaCO3; The higher the temperature, the more dominant the reverse reaction, that is, the reaction of CaCO3 decomposition to generate CaO and Co2.

Non-reactive calcium carbonate decomposes into calcium oxide and carbon dioxide at high temperatures.

Calcium oxide and carbon dioxide.

React at high temperature, the reaction equation is: cao+co=caco.

The essence of the reaction is that calcium oxide and water react first to form calcium hydroxide.

The calcium hydroxide then reacts with carbon dioxide to form calcium carbonate.

and water, the two equations are contracted, and the water is reduced. But without water, the reaction would not have taken place.

In the production process of ammonia, hydrogen and synthetic ammonia, there is often a decarburization (i.e., removal of carbon dioxide in the gas mixture), so that the carbon dioxide in the mixed gas can be absorbed under pressure and heated and desorbed under reduced pressure to obtain high-purity carbon dioxide gas.

You're not sure the answer just by asking questions, right? Let me tell you: calcium oxide does not react with carbon dioxide at high temperatures, but reacts with silica to form calcium silicate; Carbon monoxide reacts with oxygen in iron oxide to produce carbon dioxide, which reduces iron ore to iron.

It's impossible to get rid of high school because CaCO3, which is calcium carbonate, produces calcium oxide and carbon dioxide after high temperatures.