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How can acid rain destroy the protective oxide coating on the surface of metal like zinc and aluminium?
Wiki User
∙ 10y ago
Acid+metal oxides= Salt and water
So when acids react with these oxide coatings it breaks it down forming salt and water.
Wiki User
∙ 10y ago
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Why is aluminium can be used outdoors even though it is quiet high in the reactivity series?
A protective coating of aluminium oxide is formed at the surface.
What are the different types of Metal Coating Services?
A metal coating is a thin layer of metal that is applied to the surface of another metal or another material. There are many different types of metal coatings, and each has its own unique properties and benefits. The most common types of metal coatings are: Anodizing: Anodizing is a type of metal coating that is created by applying an electric current to the surface of the metal. This process creates a thin, protective layer on the metal that is resistant to corrosion and wear. Chromium plating: Chromium plating is a type of metal coating that is created by applying a thin layer of chromium to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Copper plating: Copper plating is a type of metal coating that is created by applying a thin layer of copper to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Galvanizing: Galvanizing is a type of metal coating that is created by applying a thin layer of zinc to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Gold plating: Gold plating is a type of metal coating that is created by applying a thin layer of gold to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Nickel plating: Nickel plating is a type of metal coating that is created by applying a thin layer of nickel to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Silver plating: Silver plating is a type of metal coating that is created by applying a thin layer of silver to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Tin plating: Tin plating is a type of metal coating that is created by applying a thin layer of tin to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Zinc plating: Zinc plating is a type of metal coating that is created by applying a thin layer of zinc to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear.
Why is that a piece of aluminium foil exposed to moist air does not corrode even though aluminium is more reactive than iron which easily rust?
Aluminium reacts very rapidly with the oxygen in the air to form a thin film of aluminium oxide covering the entire surface of the aluminium in the foil. This surface is invisible to the eye. Aluminium oxide is very resistant to chemical processes, like corrosion. It protects the aluminium underneath very well, so aluminium does not corrode in moist environments. If the aluminium is scratched, an new aluminium oxide film forms immediately, protecting the scratched part. Iron does not form a protective skin, because iron oxide has different chemical properties to aluminium oxide and is not able to protect the iron.
Why you can store nitric acid in aluminium container?
Nitric acid is a strong reducing agent , aluminum forms a thick layer of oxide on it while reacting with air and further nitric acid cannot oxidise Al oxide ans so nitric acid can be stored safely in it.
What is gold coating?
Gold coating is a method of depositing a thin layer of gold onto the surface of another metal.
Why is aluminium can be used outdoors even though it is quiet high in the reactivity series?
A protective coating of aluminium oxide is formed at the surface.
What does aluminum protect?
Aluminium is alight soft easily formed metal and has many aplications what it does depends on what it is used for and the environment it is used in.
What are Teflon cooking pans made of?
They can be aluminium, steel, iron, stainless steel, the 'Teflon' is a non stick coating covering the cooking surface of the base metal.
Why are food particle preferably packed in aluminium foil?
Aluminium foil donot corrode in atmosphere even if kept for a long time.Actually,aprotective coating of aluminium oxide is formed on the surface of the foil.it stops any further reaction of the metal with air and water.The eatables do not get spoiled.
What is the name of a smooth surface that reflects an image of what is in front of it?
The reflective surface is a mirror. It can be highly polished metal or chromed, the surface of a calm area of water, or a flat glass plate with a silvered back and a protective coating.
What is aqoues coating?
Aqueous coating is a term often used in the printing industry. It refers to a fast-drying, water-based, clear protective coating. It is usually applied in-line on press. The result is a clear coating that provides a high gloss surface and protects from dirt, smudges, fingerprints and scratches.
What are the different types of Metal Coating Services?
A metal coating is a thin layer of metal that is applied to the surface of another metal or another material. There are many different types of metal coatings, and each has its own unique properties and benefits. The most common types of metal coatings are: Anodizing: Anodizing is a type of metal coating that is created by applying an electric current to the surface of the metal. This process creates a thin, protective layer on the metal that is resistant to corrosion and wear. Chromium plating: Chromium plating is a type of metal coating that is created by applying a thin layer of chromium to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Copper plating: Copper plating is a type of metal coating that is created by applying a thin layer of copper to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Galvanizing: Galvanizing is a type of metal coating that is created by applying a thin layer of zinc to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Gold plating: Gold plating is a type of metal coating that is created by applying a thin layer of gold to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Nickel plating: Nickel plating is a type of metal coating that is created by applying a thin layer of nickel to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Silver plating: Silver plating is a type of metal coating that is created by applying a thin layer of silver to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Tin plating: Tin plating is a type of metal coating that is created by applying a thin layer of tin to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear. Zinc plating: Zinc plating is a type of metal coating that is created by applying a thin layer of zinc to the surface of the metal. This process creates a shiny, protective layer on the metal that is resistant to corrosion and wear.
Why Al is neither attacked by dilute sulphuric acid nor dilute nitric acid?
A protective layer is formed at the surface of aluminium; the phenomenon is called passivation.
What is colour coating line in steel plant?
A color coating line in a steel plant is a process where a layer of protective and decorative color coating is applied on steel coils or sheets. This coating enhances the aesthetics of the steel surface and provides protection against corrosion and weathering. It involves pre-treatment, coating application, curing, and quality inspection processes.
Why doesnt aluminum react with hyrdochloric acids?
Dilute nitric or sulfuric acid shows little reaction with aluminum, but hydrochloric acid dissolves it, giving off hydrogen gas. Remember too that aluminum forms a layer of oxide in air very quickly,which protects its surface. If you test for a reaction in acid, scratch the surface just before the test.
Is aluminium an element or compound?
aluminum itself is an element, but most products made of aluminum are actually an aluminum alloy.both aluminum and aluminum alloys have a thin glassy (sometimes colored) coating of aluminum oxides, which protects the actual metal surface. This coating is a compound or mixture of compounds and elements.Now wasn't that complicated?
Why is that a piece of aluminium foil exposed to moist air does not corrode even though aluminium is more reactive than iron which easily rust?
Aluminium reacts very rapidly with the oxygen in the air to form a thin film of aluminium oxide covering the entire surface of the aluminium in the foil. This surface is invisible to the eye. Aluminium oxide is very resistant to chemical processes, like corrosion. It protects the aluminium underneath very well, so aluminium does not corrode in moist environments. If the aluminium is scratched, an new aluminium oxide film forms immediately, protecting the scratched part. Iron does not form a protective skin, because iron oxide has different chemical properties to aluminium oxide and is not able to protect the iron.
