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InterviewSolution
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What product is formed when iron metal is dipped into concentrated nitric acid?(a) Iron (III) nitrate + NO2(b) Iron (II) nitrate + NO(c) Iron (III) oxide(d) Iron (III) nitriteThe question was asked at a job interview.My doubt stems from P-Block Elements in chapter P-Block Elements of Chemistry – Class 12 |
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Answer» CORRECT answer is (C) Iron (III) oxide To explain I would say: Iron becomes passive when treated with concentrated nitric acid. The FORMATION of a tough oxide layer prevents it from further reacting with the acid, hence INHIBITING the REACTION. |
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