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Which gas is released when copper chips are subjected to concentrated nitric acid?
- a)Nitrogen (I) oxide
- b)Nitrogen (II) oxide
- c)Nitrogen (III) oxide
- d)Nitrogen (IV) oxide
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Which gas is released when copper chips are subjected to concentrated ...
Gas released when copper chips are subjected to concentrated nitric acid: Nitrogen (IV) oxide
Explanation:
When copper chips are subjected to concentrated nitric acid (HNO3), a redox reaction takes place. The copper reacts with the nitric acid to form copper(II) nitrate and release nitrogen (IV) oxide gas.
The reaction can be represented by the following balanced chemical equation:
Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O
Explanation of the reaction:
1. Oxidation of copper: Nitric acid is a strong oxidizing agent. It oxidizes copper metal (Cu) to copper(II) ions (Cu2+). This involves the transfer of electrons from copper to nitric acid.
Cu → Cu2+ + 2e-
2. Reduction of nitric acid: Nitric acid is reduced to nitrogen (IV) oxide gas (NO2) during the reaction. This involves the loss of oxygen atoms by nitric acid.
4HNO3 + 2e- → 4NO2 + 2H2O
3. Formation of copper(II) nitrate: The copper(II) ions produced in the oxidation step react with nitrate ions (NO3-) from nitric acid to form copper(II) nitrate (Cu(NO3)2).
Cu2+ + 2NO3- → Cu(NO3)2
4. Release of nitrogen (IV) oxide gas: Nitrogen (IV) oxide gas (NO2) is released as a brownish-red gas. This gas has a pungent odor and is toxic.
Conclusion:
When copper chips are subjected to concentrated nitric acid, the reaction between copper and nitric acid produces copper(II) nitrate and releases nitrogen (IV) oxide gas. The balanced chemical equation for the reaction is Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O.
Explanation:
When copper chips are subjected to concentrated nitric acid (HNO3), a redox reaction takes place. The copper reacts with the nitric acid to form copper(II) nitrate and release nitrogen (IV) oxide gas.
The reaction can be represented by the following balanced chemical equation:
Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O
Explanation of the reaction:
1. Oxidation of copper: Nitric acid is a strong oxidizing agent. It oxidizes copper metal (Cu) to copper(II) ions (Cu2+). This involves the transfer of electrons from copper to nitric acid.
Cu → Cu2+ + 2e-
2. Reduction of nitric acid: Nitric acid is reduced to nitrogen (IV) oxide gas (NO2) during the reaction. This involves the loss of oxygen atoms by nitric acid.
4HNO3 + 2e- → 4NO2 + 2H2O
3. Formation of copper(II) nitrate: The copper(II) ions produced in the oxidation step react with nitrate ions (NO3-) from nitric acid to form copper(II) nitrate (Cu(NO3)2).
Cu2+ + 2NO3- → Cu(NO3)2
4. Release of nitrogen (IV) oxide gas: Nitrogen (IV) oxide gas (NO2) is released as a brownish-red gas. This gas has a pungent odor and is toxic.
Conclusion:
When copper chips are subjected to concentrated nitric acid, the reaction between copper and nitric acid produces copper(II) nitrate and releases nitrogen (IV) oxide gas. The balanced chemical equation for the reaction is Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O.
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Community Answer
Which gas is released when copper chips are subjected to concentrated ...
Treating copper chips with concentrated nitric acid releases toxic brown gas, NO2, nitrogen (IV) oxide. It is a reddish-brown gas with pungent odor.
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Which gas is released when copper chips are subjected to concentrated nitric acid?a)Nitrogen (I) oxideb)Nitrogen (II) oxidec)Nitrogen (III) oxided)Nitrogen (IV) oxideCorrect answer is option 'D'. Can you explain this answer?
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