How to prove that carbon dioxide and water did indeed have a chemical reaction

Carbon dioxide. Mixing with water, strictly speaking, is not a chemical reaction, but carbon dioxide dissolves in water to form carbonic acid, which can be used phenolphthalein.

If you drop the reagent or measure it with a pH test paper, the pH will generally be less than 7, which proves that it is thawed. Carbonic acid is a weak acid that is very similar to water, unstable, and easily decomposed.

1. Dried blue litmus paper has no color change in the gas collection cylinder of carbon dioxide. The moist blue litmus paper gradually turns red in the carbon dioxide collector cylinder. This shows that carbon dioxide itself and litmus paper have no effect, but there is a significant change in the presence of water, indicating that carbon dioxide and water form new substances.

2. Dry carbon dioxide is passed into solid calcium hypochlorite without any change. When calcium hypochlorite solution is introduced, precipitated and bleaching hypochlorous acid will be formed. This shows that carbon dioxide and calcium hypochlorite do not react, but if water is present, there is an obvious phenomenon, indicating that carbon dioxide and water form a new substance that can react with calcium hypochlorite.

1. Use pH test paper to measure the pH value before and after the introduction of carbon dioxide, and the pH value after the introduction is small and acidic.

2. Take two points of water and one part into it.

After carbon dioxide, the clarified lime water is added dropwise, and the edge is turbid, and a portion is directly added to the clarified lime water, and there is no change.

3. After the introduction of carbon dioxide, dilute hydrochloric acid is added gradually, and bubbles are generated, and the bubbles can make the clarified lime water turbid.

1.Water droplets, water vapor, carbon dioxide, calcium hydroxide + carbon dioxide, calcium carbonate + water.

2.The bottle is deflated with carbon dioxide dissolved in water, the bottle is more deflated, and the lime water is cloudy, and carbon dioxide reacts with calcium hydroxide.

3.Water + Carbon Dioxide Carbon dioxide carbonate dissolves in water, so it becomes denser, so it allows small balls to surface.

Water reacts with carbon at high temperatures to produce carbon monoxide and hydrogen, and then ignites to produce water and carbon dioxide.

Carbon dioxide can be dissolved in water and react with water to form carbonic acid, and unstable carbonic acid is easy to decompose into water and carbon dioxide, and the corresponding chemical reaction equation is: CO2+H2O=H2CO3; h2co3=co2+h2o。

Introduction

Carbon dioxide is a carbon oxide with the chemical formula CO2 and the chemical formula amount. At room temperature and pressure, it is a colorless, odorless or colorless, odorless and slightly sour gas, which is also a common greenhouse gas and one of the components of air.

Carbon dioxide is an inorganic substance, non-flammable, does not normally support combustion, and is non-toxic at low concentrations. In chemical laboratories, marble is often used to react with dilute hydrochloric acid to produce carbon dioxide. The addition of carbon dioxide to the clarified lime water will cause the clarified lime water to become cloudy and produce calcium carbonate precipitates (this reaction is often used to test for carbon dioxide).

Chemistry Virtual Experiment Hu Jingchu Pants Caution Carbon Dioxide Reaction with Water.

Catalytic combustion is a purification method that uses a catalyst to oxidize and decompose combustible substances in the exhaust gas at a lower temperature. Therefore, catalytic combustion is also known as catalytic chemical conversion. Since the catalyst accelerates the process of oxidative decomposition, most hydrocarbons can be completely oxidized by the catalyst at a temperature of 300 450.

1. Carbon dioxide and water reaction (carbon dioxide passes into purple socks buried litmus test solution): CO2+H2O===H2CO3.

2. Phenomenon Zheng Lu: The litmus test solution changes from purple to red.

3. Carbon dioxide can be dissolved in water and react with water to form carbonic acid, and unstable carbonic acid is easy to decompose into water and carbon dioxide.

4. Under certain conditions, the carbon dioxide can react with alkaline oxides to form the corresponding salt.

<>1. Reaction of carbon dioxide and water (carbon dioxide passes into purple litmus test solution): CO2+H2O===H2CO3.

2. Phenomenon: The litmus test solution turns from purple to red.

3. Carbon dioxide can be slippery to dissolve in water and react with water to form carbonic acid, while unstable carbonic acid is easy to decompose into water and carbon dioxide.

4. Under certain conditions, carbon dioxide can react with alkaline oxides to form salts in phase liquid.

The chemical equation for the reaction of carbon dioxide and water: CO + HO = H CO.

In terms of physical properties, carbon dioxide has a melting point of a boiling point of being denser than air (under standard conditions) and is soluble in water. In terms of chemical properties, carbon dioxide is chemically inactive, has high thermal stability (only decomposition in 2000), cannot be burned, and usually does not support combustion, it belongs to acid oxides, has the general properties of acid oxides, and is an acid anhydride of carbonic acid because it reacts with water to form carbonic acid.

Knowledge of the chemical properties of carbon dioxide.

At room temperature, it is a colorless and odorless gas, slightly denser than air, soluble in water, and produces carbonic acid.

One of the carbon oxides, is an inorganic substance, at room temperature is a colorless and odorless gas, slightly denser than air, soluble in water, and produces carbonic acid. (Basic Principles of Carbonated Drinks) Purple litmus solution turns red, and clear lime water (Ca(OH)2) can be used to make clear lime water (Ca(OH)2) turbid, and can be used in experiments on the production of carbon dioxide from respiration products. It can also support magnesium band combustion.

The above content refers to Encyclopedia - Carbon Dioxide.