Question

what do you observe when concentrated nitric acid is added to copper turning?

Answer 1

If the nitric acid is dilute, the copper will be oxidized to form copper nitrate with nitric oxide as a byproduct. If the solution is concentrated, the copper will be oxidized to form copper nitrate with nitrogen dioxide as a byproduct.

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Answer 2

Concentrated nitric acid is added to copper turning.

Explanation:

• When concentrated nitric acid is added to copper turning, the copper is oxidized. It forms copper nitrate. The byproduct of the reaction is Nitrogen dioxide.
• When dilute nitric acid is added to copper turning, the copper is oxidized. It also forms copper nitrate. But the byproduct of the reaction is Nitric oxide.

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State observation

Concentrated nitric acid is added to copper turnings

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