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Aluminum nitrate formula is Al(NO3)3. Aluminum Nitrate is a salt composed of one aluminum atom and three nitrate atoms. Moreover, this salt is a reactive chemical, as are organic nitrate and nitrite acid. Additionally, the nitrate ion is polyatomic. This means that it is made up of two or more covalently linked ions. Further, this ion is the conjugate base of nitric acid.
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Key Terms: Formula, Molar mass, Nitrating Agent, Salt, Passivation Layer, Uses of Aluminium Nitrate
What is Aluminum Nitrate?
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Aluminum is prevalent in the earth's crust, where it is found in combination with elements such as fluorine, silicon, and oxygen. A neutral salt combination with the formula aluminum nitrate is formed when an aluminum cation and a polyatomic anion of nitrate mix.
As a result, the chemical formula for aluminum nitrate is presented as Al(NO3)3, which is also the symbol for aluminum nitrate. It can exist in both anhydrous and hydrated forms. The chemical formula for aluminum nitrate may alternatively be written as Mg(NO3)3.9 (H2O)
Aluminum Nitrate
Aluminum Nitrate Formula
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Aluminium nitrate formula is AI(NO3)3. Aluminum Nitrate is a metal with three electrons in its outer electron shell. Furthermore, for aluminum, losing three electrons is more efficient than gaining five. As a result, when it loses its three negatively charged particles, it gains a net electric charge of +3. As a result, it forms an ion, and its formula becomes Al3+.
Nitrate is a compound composed of one nitrogen atom and three oxygen atoms. As a result, it is a polyatomic ion. It also bears a -1 net charge and has the formula NO13-.
Oppositely charged particles are attracted to one another. In order to produce an ionic compound, the ions must have a certain ratio. This is due to the fact that there should be no net electric charge. Since each nitrate has a charge of -1 and each aluminum has a charge of +3, we need three nitrate ions to cancel out the charge of one aluminum ion.
Aluminum Nitrate Properties
The properties of Aluminium Nitrate are-
| Properties | |
|---|---|
| Name | Aluminum Nitrate |
| Appearance | White crystalline solid |
| Molecular Formula | Al(NO3)3 |
| Molecular Weight | 213.0 |
| Substance Compounds | Aluminum, Nitric Acid |
| Melting Point | 72.8 °C |
| Boiling Point | 135 °C |
| Density | 1.72 g/cm³ |
| Molar Mass | 212.996 g/mol |
Aluminum Nitrate: Preparation and Formation
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Aluminum nitrate cannot be produced by reacting the metal with concentrated nitric acid because the aluminum creates a passivation layer. Instead, aluminum nitrate may be made by reacting nitric acid with aluminum (III) chloride. As a byproduct, nitrosyl chloride bubbles out of the solution as a gas. The salt may be generated more easily by reacting nitric acid with aluminum hydroxide.
Aluminum nitrate can also be synthesized by a metathesis reaction between aluminum sulphate and a nitrate salt containing a suitable cation such as barium, strontium, calcium, silver, or lead.
Aluminum Nitrate: Chemical Properties
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Aluminum nitrate is utilized as a nitrating agent because it may react with certain hydroxides or other salts to generate a new nitrate, such as:
Al(NO3)3 + 3 NaOH → Al(OH)3 + 3 NaNO3
Aluminum Nitrate: Physical Properties
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Aluminum nitrate is available in two forms: anhydrous as a white odorless hygroscopic powder and hydrate (nonahydrate) as a deliquescent solid.
- Molar Mass: The anhydrous molar mass of this chemical is 212.996 g/mol while the nonahydrate molar mass is 375.134 g/mol.
- It has a density of 1.401 g/cm3.
- Melting Point: The melting point of nonahydrate is 72.8°C (163° F).
- Boiling Point: The nonahydrate boiling point of this chemical is 135°C (275°F).
- Solubility: Learn about this substance's solubility in various liquids.
- Odor: It has no odor.
- Molecular Weight: It has a molecular mass of 375.13.
Aluminum Nitrate Uses
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The Applications of Aluminium Nitrate are:
- Aluminum Nitrate is primarily utilized in the production of alumina or aluminum oxide, which is employed in the manufacture of corrosion-resistant parts, electronic components, and so on.
- Aluminum nitrate is commonly found in personal care products, such as fragrances and deodorants.
- Aluminum nitrate is required for the tanning of leather goods.
- Aluminum nitrate is indeed utilized in gasoline refining. As a result, we may argue that this substance is indirectly utilized to power our automobiles!
- It is used to manufacture insulated sheets that are utilized as heating elements in cathode ray tubes.
Things to Remember
- Aluminum nitrate is produced by neutralizing weak nitric acid with aluminum (III) chloride or any of the aluminum salts such as aluminum hydroxide. This is due to the formation of a passivation layer when any aluminum salt reacts with a strong form of nitric acid.
- Due to the general ionic and structural qualities demonstrated by the aluminum nitrate chemical formula and structural formula, it is particularly soluble in water, ethanol, methanol, and ethylene glycol.
- The salt of aluminum nitrate has the ability to store and retain water, as seen by the chemical formula of aluminum nitrate in both hydrate forms.
- The hydrated forms of aluminum nitrate are employed in the extraction process of elements from the actinide series, as seen in the contemporary periodic table.
Previous Year Questions
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Sample Questions
Ques. When aluminum nitrate is heated, what happens? (1 mark )
Ans. When heated, the nano-hydrate aluminum nitrate salt forms aluminum oxide, and calcium, and releases red-brown gaseous nitrogen dioxide.
Ques. Is it a chemical or physical procedure to dissolve aluminum nitrate in water? (2 marks)
Ans. Since the solid has been dissolved, it has been converted into the component ions (Al3+ and NO3-), each of which is surrounded by H2O molecules; it may be regarded as a chemical transformation.
Ques. What is aluminum oxide? (2 marks)
Ans. Aluminum oxide (Al2O3) is a chemical compound composed of aluminum and oxygen with the formula Al2O3. It is typically referred to as alumina, however, it may also be referred to as alkoxide, alkoxide, or alundum depending on its form or use.
Ques. What is the ion content of aluminum nitrate? (2 marks)
Ans. Ionic compounds are generated when oppositely charged ions combine, and they must be neutral. One aluminum ion and three nitrate ions are required to generate a neutral ionic compound. AlNO3 is the chemical formula for aluminum nitrate.
Ques. Is aluminum oxide a conductor or an insulator? (2 marks)
Ans. Although aluminum oxide is an electrical insulator, it has high thermal conductivity (40 W/m K). Its hardness makes it appropriate for use as an abrasive and as a component in cutting tools in its most common crystalline form, known as corundum or á-aluminum oxide.
Ques. What exactly is aluminum oxidation? (2 marks)
Ans. Oxidation is the process through which metal corrodes. The result is a thin, hard coating of aluminum oxide that actually shields the metal from further corrosion. Aluminum oxide has the appearance of a powdered white or dull grey covering.
Ques. What is aluminum nitrate used for? (3 marks)
Ans. The uses of aluminum nitrate are-
- Aluminum nitrate is important in generating energy since it is utilized in the extraction of uranium, which is a vital fuel in a nuclear reactor. Electricity is generated by these nuclear reactors.
- Aluminum nitrate aids in the corrosion inhibiting process, preventing corrosion of various nuclear reactor components that may erode over time.
- Since aluminum nitrate is a highly strong oxidizing agent, hydrated versions of aluminum nitrate are utilized for the extraction of elements from the actinide series of the contemporary periodic table.
- In a chemical process, it is also used as a nitrating agent.
Ques. Is Aluminium Nitrate Highly a Strong Oxidising Agent? (3 marks)
Ans. Aluminum nitrate with nitric acid is a strong electrolyte. It is a strong oxidizing agent, because of the presence of the nitrate group. Due to oxidizing properties, it has significant use in industries of tanning of leather, the process of extraction of uranium, the preparation of antiperspirants, the refining of petroleum products, etc. Also, due to the presence of nitrate, it is also used as a nitrating agent in many chemical reactions.
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