Aluminium is more active than iron yet there is less corrosion of aluminium when both are exposed to air. Explain the statement.

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Solution

Dear Student,

The corrosion of Aluminium leads to formation of a layer of Aluminium oxide, which acts as a protective shield against further corrosion as aluminium oxide renders the metal below it passive to corrosion.

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Aluminium is said to be more reactive than iron, towards oxygen (or air).Yet iron undergoes corrosion to a greater extent than aluminium.Explain.

(a) Aluminium is a more active metal than iron, but suffers less corrosion. Why?
(b) Explain and give reasons why aluminium vessels should not be cleaned with powders containing alkalis.
(c) Why is the food containing iron salts should not be cooked in aluminium utensils?

Q. Aluminium is more reactive than iron but aluminium is less easily corroded than iron because:

Q. What is the difference between iron and aluminium with respect to corrosion?

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Aluminium is more active than iron yet there is less corrosion of aluminium when both are exposed to air. Explain the statement.

Dear Student, The corrosion of Aluminium leads to formation of a layer of Aluminium oxide, which acts as a protective shield against further corrosion as aluminium oxide renders the metal below it passive to corrosion. Regards

Dear Student,

The corrosion of Aluminium leads to formation of a layer of Aluminium oxide, which acts as a protective shield against further corrosion as aluminium oxide renders the metal below it passive to corrosion.

Regards