Under what conditions can water burn?

Water can be decomposed into hydrogen and oxygen at high temperatures, which can cause the flame to burn more vigorously when there is an open flame. Experiments have shown that salt water can also catch fire. However, it is not the water itself that burns, but the separated hydrogen molecules.

Water cannot be burned under normal conditions, only after the components of water, hydrogen and oxygen, are ionized, or water is poured into a special device to ionize the constituent substances of water, and after a series of physical and chemical means, water can be burned.

If there is gasoline in the water, there is this flammable and explosive object, in this case, the water can be burned, and with the combustion of the gas, then the moisture will merge with the oil.

In fact, water cannot be burned, water reaches a certain temperature, it will boil, but it will never burn.

At extremely high temperatures, water can evaporate into water vapor, which then decomposes into hydrogen and oxygen, so it looks like water is burning from the outside, but it's actually hydrogen burning.

Elemental metals: sodium, potassium, rubidium, cesium. Sodium, potassium, rubidium, and cesium have a chemical reaction because their outermost shell and electron number is 1, and the most reactive electrons can combine with OH- in water to form new substances.

Combustion and the conditions of combustion.

1. Ordinary combustion refers to a luminous and heat-generating violent oxidation reaction between combustibles and oxygen.

Combustion needs to meet three conditions at the same time: combustibles; contact with oxygen (or air); The temperature reaches the ignition point of the combustible.

Factors influencing the combustion phenomenon: the nature of the combustible, the concentration of oxygen, the contact area with oxygen.

There are two conditions for the fuel to burn sufficiently: there must be enough air; The fuel has a sufficiently large contact area with the air.

2. Ignition point: the minimum temperature required for combustion. The ignition point is an intrinsic property of the substance itself. Therefore, it cannot be said that the fire can be extinguished by lowering the ignition point, but only by cooling the fire below the ignition point.

As long as the three conditions for combustion are met, combustion can still occur in water. If you add a small piece of white phosphorus to the hot water of 80 and then introduce oxygen near the white phosphorus, you will find that the white phosphorus burns in the water, because the three conditions for the combustion of white phosphorus have been satisfied.

But this is not absolute water burning.

The friend who answered the alkali metal (K potassium and Na sodium) was negligent, these two metals are less dense than water, and can only be regarded as burning on the surface of the water, but because the two metals react directly with water, they will still burn when pressed directly to the bottom of the water.

Fluorine is insoluble in water, but it reacts violently with water, breaking down water to release oxygen, which is a strong, spontaneous and exothermic reaction. In the reaction, fluorine acts as an oxidant and water acts as a reducing agent, which is the first type of redox reaction.

2f2 + 2h2o = 4hf + o2 This can be considered a real combustion, which does not emit light but heats up.

Metal: sodium.

Sodium burns when it encounters water.

Combustion is the process in which a substance undergoes a violent oxidation reaction and emits heat and emits light.

Water molecules. Medium hydrogen is +1 valence and can no longer be oxidized, while oxygen is -2 valence and has reached the most stable valence state and will not be oxidized.

Consider it from another point of view, water has reached its most stable state of its chemical bonds.

The bond energy is very large, and the energy itself is very low, and it is difficult to have a substance with lower energy than water.

So water can't burn.

In general, it is impossible, if you have to let the water burn, there is also a way, electrolysis of water, into hydrogen and oxygen and then used as fuel, there is also a way, spray an appropriate amount of water on the coal burned at high temperature, so that the water and coal react to form combustible carbon monoxide.

There is a higher heat release, and there is the use of heavy water, the use of fusion reactions.

A large amount of heat is generated, which is turned into other sources of energy and heat. <>

Water cannot be burned directly, but it can be converted into some kind of energy for combustion.

Water is a neutral substance, it is easy to be affected by temperature, and it is easy to quantify the action into water or medium energy into wind power, the release of water energy can not form a fire phenomenon, because the energy of fire is heat is relatively positive energy, and the energy of water is medium energy.

Water cannot be burned, water is already the end product of hydrogen and oxygen combustion, just as carbon dioxide cannot be burned.

The fundamental definition of combustion is to release energy, if high-temperature pyrolysis is not combustion, electrolysis and re-combustion are not water combustion, so in addition to the stronger oxidant fluorine atmosphere, almost no combustion.

It cannot be chemically combusted, but it can be nuclear fusion.

Hydrogen is combustible and oxygen is combustible so it can be (funny).

Water: You say I can burn it, don't worry about me.

There is oxygen in the seawater, how can it not be burned.

After electrolysis, hydrogen and oxygen can be produced, and hydrogen can be burned.

Throw cesium into the water (funny).

Turning into boiling water? Manually funny.

You ask this question like if a boy can get pregnant.

Water can burn in junior high school physics classes.

After water is vaporized at ultra-high temperatures, it can easily decompose into hydrogen and oxygen, and the flame will be stronger in the presence of combustibles and open flames.

This is the reason why the dry briquettes are soaked in water and then burned, and the flame is stronger and burns longer.

You may not think that there are such metals in the world, they can immediately cause a fire or ** when they encounter water. Lithium, potassium, sodium, etc., are such metals. They can react violently when exposed to water, humid air, and water-containing substances, releasing flammable gases and a lot of heat, causing combustion.

Under what conditions can water burn? The idiom of incompatibility between fire and water is not only used as a metaphor for the relationship between people, but also the most intuitive embodiment of the opposite nature of water and fire. Although, when there is a fire that needs to be extinguished, many people will think of splashing water at the first time.

But in fact, using water to extinguish a fire is not the best choice, because water cannot extinguish the fire at all in many cases, which is why there are fire extinguishers, and the relevant organizations will explain the use of fire extinguishers to everyone from time to time.

Under normal circumstances, fire extinguishers are placed in a relatively common location, in addition to the office buildings where everyone usually goes and leaves, including in the corridors of the residential areas where everyone lives. Of course, the substance in these fire extinguishers cannot be water under normal circumstances, and not all fire extinguishers are filled with the same ingredient, because the possible causes of fires will vary depending on the surrounding environment. For example, dry powders (mainly inorganic salts), carbon dioxide (using the concentration of carbon dioxide) and foams (sodium bicarbonate and aluminum sulfate) are the main types of fillers for fire extinguishers.

Back to the point, the above is mainly about the fact that water does not work well in extinguishing fires under all conditions. As we all know, reaching the ignition point, oxidant and combustibles are the three basic elements of combustion, and the flame formed by combustion is not only a physical phenomenon, but also a chemical process of material conversion.

What I want to say is that although water cannot be burned in its normal state, it can also be burned when certain conditions are met (e.g., after the hydrogen and oxygen that make up the water are ionized).

First of all, we can understand that water gas is a gas, which is actually produced by water vapor under the action of red-hot coke. In terms of the composition of water gas, it is mainly hydrogen and carbon monoxide. Since all substances do not disappear from this world out of thin air, when water and gas are burned, substances such as carbon dioxide and water are formed.

I believe that everyone knows more about gasoline, and water gas not only has better anti-explosion, but also its combustion rate can reach about twice that of the former.

Water should not be burned because the temperature required for combustion is very high, and the temperature of water is relatively low, but it can be burned by adding alcohol.

Water can be decomposed into hydrogen atoms and oxygen atoms after being heated at high temperatures, and water can be burned as long as the ignition point of hydrogen atoms is reached.

Water can be burned, 1, the three major conditions for combustion.

When it comes to combustion, the most important thing is:

1) There is a fire source, because the fire must be ignited, just like the fire is the fire source.

2) Incendiary materials are things that may be burned, such as wood from mountain fires, natural gas from home fires, etc.

3) Accelerant, burning light has fire, there are combustibles, and accelerants are also needed, the most common is to close the fire door on fire, and cover the pot lid when the stir-fry is on fire. All are extinguished by isolating oxygen.

Have you ever seen coal ash burn?

Water can be seen as ash after the combustion of hydrogen and oxygen.

If you want water to burn.

The energy provided must be greater than the energy released by the combustion of hydrogen and oxygen.

water at 2000 degrees.

Only 3% of water can be decomposed, and it can react with active metals to release a lot of heat.

However, the reaction of water is mostly endothermic.

Combustion is the process in which a substance undergoes a violent oxidation reaction and emits heat and emits light.

Hydrogen in the water molecule is +1 valence and can no longer be oxidized, while oxygen is -2 valence and has reached the most stable valence state and will not be oxidized.

From another point of view, water has reached the most stable state, its chemical bond energy is very large, its own energy is very low, and it is difficult to have a substance with lower energy than water.

So water can't burn.

Water itself cannot be missing, but when water is mixed with red-hot carbon, it will undergo a chemical reaction to produce water gas, which can be burned.

Water can be separated under certain conditions, and can achieve more efficient and environmentally friendly than any other fuel, but so far there is no reasonable and feasible way to separate water, I think water can be burned after we have reached a certain stage of human development!

Water can't be burned at the moment, but that doesn't mean it won't burn in the future. Water contains oxygen, which burns, and it is believed that soon there will be machines that use water as fuel.

The steam engine was invented a long time ago, and it is to use water as the power to propel trains.

Water cannot be burned, it can only be turned into steam.

No, on the contrary, water is flame retardant.