which one of the following gas is formed when copper is treated with concentrated nitric acid?

N O

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N_{2} O

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N_{2} O_{2}

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N O_{2}

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Solution

The correct option is D $N O_{2}$
When copper is treated with concentrated nitric acid, The gas formed is nitrogen dioxide. The equation is $C u + H N O_{3} (c o n c .) \to C u (N O_{3})_{3} + N O_{2} + H_{2} O$

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Which of the following gas is formed when copper reacts with a hot dilute nitric acid?

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