The reaction equation of aluminum and water:
The reaction of aluminum and water will generate aluminum oxide and l 'hydrogen. The reaction equation for aluminum and water is 2Al+6H20=2Al(OH). 3+3H2(heating).
The reaction phenomenon between aluminum and water:
The reaction between aluminum and water will initially form a dense oxide film with oxygen present in the water, preventing further progression of the reaction. reaction, so even when heated, the reaction is also very weak and can be ignored.
Properties of aluminum:
The appearance of aluminum is that of a light silver-white metal. It's malleable. Products are often processed into columns, rods, sheets, sheets, powders, ribbons and filaments. In humid air, a dense oxide film can form to prevent corrosion of the metal. Aluminum powder treated with acid may burn violently and emit a flame.e dazzling white when heated in air.
Aluminum is easily soluble in solutions of dilute nitric acid, dilute sulfuric acid, sodium hydroxide, hydrochloric acid and potassium hydroxide. It is insoluble in water, but can react slowly with hot water to form aluminum hydroxide. relative density is 2.70, melting point 660℃, boiling point 2327℃. It is widely used for its light weight, good electrical and thermal conductivity, high reflectivity and resistance to oxidation.
Aluminum is a light metal with the chemical symbol Al and atomic number: 13. The aluminum content of the earth's crust ranks third after oxygen and silicon. It is the most abundant metallic element in the earth's crust and its reserves rank second among metals. Among the types of metals, it is the second most important metal categorye after steel.
Does aluminum react with water?
Aluminum reacts with water, equation:
2Al+6H20 ===2Al(OH)3+ 3H2 (heating)
This reaction is also very weak during heating and can be ignored
The water in aluminum kettles in which We usually boil water will contain a very small amount of Al3+, so Aluminum kettles are not effective for boiling water.
Does the suspension hydrogenerator have an aluminum core?
Aluminum can react with water to form aluminum oxide , but the aluminum oxide will prevent the reaction from continuing to occur. conditions are getting warmer.
Aluminum has high metallicity and can react completely with water. However, since an extremely dense oxide film (aluminum trioxide) forms as soon as it comes into contact with water, the reaction will practically not proceed.
By conséHowever, aluminum must react with acidic or alkaline water. The function of the acid or alkali is to continuously remove the dense oxide film formed on the surface of the aluminum, allowing the reaction to continue.
Detailed information:
Global aluminum production has exceeded copper production since 1956 and has consistently ranked first among non-ferrous metals. The current production and consumption of aluminum (calculated in tons) is second only to steel and has become the most important material used by human beings. The second largest resources of metals and aluminum are very abundant. According to preliminary calculations, aluminum mineral reserves represent more than 8% of the materials that make upnt the earth’s crust.
The density of aluminum is very low, but it can be made into various aluminum alloys, such as duralumin, superduralumin, anti-rust aluminum, cast aluminum, etc. These aluminum alloys are widely used in manufacturing industries such as airplanes, automobiles, trains and ships. Additionally, space rockets, space shuttles and artificial satellites also use a large amount of aluminum and its alloys.
Why is hydrogen produced when aluminum reacts with water?
The suspension hydrogenerator does not have an aluminum core . According to relevant public information, the suspension hydrogenerator is a power generation equipment that converts water energy into electrical energy. The rotor is made of silver-copper alloy or steel, and the core is made of aluminum, that is, the motor rotor is made of aluminum,is generally. used to reduce weight, reduce costs and improve efficiency. It has low mechanical strength and low heat resistance and is easy to deform and burn. Therefore, in suspended hydrogenerators, the rotor is usually made of other materials to guarantee its mechanical strength and heat resistance. safe and stable operation of the equipment.
General aluminum has a dense oxide film on its surface and is difficult to react with water, so it can be used to make aluminum pots or other containers. However, when the oxide film is destroyed, the reaction between aluminum and hot water is relatively rapid. The reason is that aluminum is a very reactive metal and it releases hydrogen gas according to the same principle as sodium and water.
The damage caused by chlorine ions on the aluminum oxide film is relatively importants. Therefore, if you use an aluminum pan to cook salt water or salty things, it will easily corrode the aluminum pan, which will not only affect the life of the aluminum pan, but also cause a large amount of aluminum in food or drinking water. , causing an accumulation of aluminum in the human body. Aluminum accumulation can lead to Alzheimer's disease.