Iron reacts with conc. $H C l$ and conc. $H_{2} {S O}_{4}$ . But it does not react with conc. $H {N O}_{3}$ . Suggest your answer with proper reason.

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Solution

When iron reacts with nitric acid, it renders iron passive due to the formation of a thin oxide coating on the surface of the metal which prevents further reaction. This phenomenon is known as passivity.

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Similar questions

H_{2}

H_{2} S O_{4}

H C l

H N O_{3}

H_{2} {S O}_{4}

H {N O}_{3}

H_{2} {S O}_{4}

Copper does not react with conc. sulphuric acid but reacts with the dilute acid

H {N O}_{3}

H_{2} {S O}_{4}

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