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Which of these gases is released upon treating zinc with diluted and then concentrated nitric acid?

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in Chemistry – Class 12 by (188k points)
Which of these gases is released upon treating zinc with diluted and then concentrated nitric acid?

(a) Nitrogen dioxide and nitrous oxide

(b) Nitric oxide and nitrous oxide

(c) Nitrous oxide and nitrogen dioxide

(d) Nitrous oxide and nitric oxide

This question was posed to me during an online interview.

This interesting question is from P-Block Elements in section P-Block Elements of Chemistry – Class 12

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The correct answer is (c) Nitrous oxide and nitrogen dioxide

To explain: The products released depend on the concentration of nitric acid. In case of zinc metal, diluted nitric acid treatment release nitrous oxide and concentrated nitric acid causes the release of nitrogen dioxide.

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