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Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because:
- a)aluminium is a noble metal
- b)oxygen forms a protective oxide layer
- c)iron undergoes reaction easily with water
- d)iron forms both mono and divalent ions
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Aluminum is more reactive than iron, but aluminium is less easily corr...
The formation of oxide film on AI surface prevents it from further corrosion.
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Aluminum is more reactive than iron, but aluminium is less easily corr...
Introduction:
Aluminum and iron are both metals, but they have different reactivity and susceptibility to corrosion. While aluminum is more reactive than iron, it is less easily corroded. The reason behind this lies in the formation of a protective oxide layer on the surface of aluminum.
Explanation:
1. Reactivity:
Aluminum is more reactive than iron, meaning it is more likely to undergo chemical reactions. This is evident when we compare their positions in the reactivity series. Aluminum is higher than iron in the series, indicating its greater reactivity.
2. Corrosion:
Corrosion is the process of a metal deteriorating due to chemical reactions with its environment. Iron is highly susceptible to corrosion and readily reacts with oxygen and moisture in the air to form iron oxide (rust). On the other hand, aluminum is less easily corroded because of the formation of a protective oxide layer.
3. Protective oxide layer:
When aluminum comes into contact with oxygen, it rapidly reacts to form a thin layer of aluminum oxide (Al2O3) on its surface. This oxide layer acts as a barrier, preventing further reaction between aluminum and the surrounding environment. It is stable and adheres tightly to the metal surface, providing excellent protection against corrosion.
4. Self-healing properties:
One of the remarkable characteristics of aluminum oxide is its self-healing properties. If the oxide layer is scratched or damaged, it immediately reacts with oxygen to reform and repair itself. This constant self-healing process ensures the prolonged protection of the underlying aluminum from corrosion.
Conclusion:
In conclusion, aluminum is more reactive than iron but is less easily corroded due to the formation of a protective oxide layer. This oxide layer acts as a barrier, preventing further reaction between aluminum and the environment. It also possesses self-healing properties, ensuring the long-term protection of the metal.
Aluminum and iron are both metals, but they have different reactivity and susceptibility to corrosion. While aluminum is more reactive than iron, it is less easily corroded. The reason behind this lies in the formation of a protective oxide layer on the surface of aluminum.
Explanation:
1. Reactivity:
Aluminum is more reactive than iron, meaning it is more likely to undergo chemical reactions. This is evident when we compare their positions in the reactivity series. Aluminum is higher than iron in the series, indicating its greater reactivity.
2. Corrosion:
Corrosion is the process of a metal deteriorating due to chemical reactions with its environment. Iron is highly susceptible to corrosion and readily reacts with oxygen and moisture in the air to form iron oxide (rust). On the other hand, aluminum is less easily corroded because of the formation of a protective oxide layer.
3. Protective oxide layer:
When aluminum comes into contact with oxygen, it rapidly reacts to form a thin layer of aluminum oxide (Al2O3) on its surface. This oxide layer acts as a barrier, preventing further reaction between aluminum and the surrounding environment. It is stable and adheres tightly to the metal surface, providing excellent protection against corrosion.
4. Self-healing properties:
One of the remarkable characteristics of aluminum oxide is its self-healing properties. If the oxide layer is scratched or damaged, it immediately reacts with oxygen to reform and repair itself. This constant self-healing process ensures the prolonged protection of the underlying aluminum from corrosion.
Conclusion:
In conclusion, aluminum is more reactive than iron but is less easily corroded due to the formation of a protective oxide layer. This oxide layer acts as a barrier, preventing further reaction between aluminum and the environment. It also possesses self-healing properties, ensuring the long-term protection of the metal.
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Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer?
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Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer?.
Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer?.
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Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Aluminum is more reactive than iron, but aluminium is less easily corroded than iron because: a)aluminium is a noble metal b)oxygen forms a protective oxide layer c)iron undergoes reaction easily with water d)iron forms both mono and divalent ionsCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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