Class 12 Exam > Class 12 Questions > Pure nitrogen is prepared in the laboratory b...
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Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]
- a)NH4OH + NaCl
- b)NH4 NO3 + NaCl
- c)NH4 Cl + NaOH
- d)NH4 Cl + NaNO2.
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Pure nitrogen is prepared in the laboratory by heating a mixture of [1...
Pure nitrogen in the lab can be obtained by heating ammonium nitrate. Ammonium nitrate is not a stable compound it dissociate to give nitrogen.
Most Upvoted Answer
Pure nitrogen is prepared in the laboratory by heating a mixture of [1...
Explanation:
Nitrogen gas (N2) is prepared in the laboratory by the decomposition of ammonium nitrite (NH4NO2). This can be achieved by heating a mixture of ammonium chloride (NH4Cl) and sodium nitrite (NaNO2).
The reaction involved is:
2NH4Cl + 2NaNO2 → N2 + 2NaCl + 4H2O
Step-by-Step Explanation:
1. Start with a mixture of ammonium chloride (NH4Cl) and sodium nitrite (NaNO2) in a reaction vessel.
2. Heat the mixture to a high temperature, typically around 300-400°C. This provides the energy needed to drive the decomposition reaction.
3. The ammonium chloride (NH4Cl) decomposes into ammonia gas (NH3) and hydrogen chloride gas (HCl) according to the following reaction:
NH4Cl → NH3 + HCl
4. The sodium nitrite (NaNO2) decomposes into sodium nitrate (NaNO3) and nitrogen dioxide gas (NO2) according to the following reaction:
2NaNO2 → 2NaNO3 + N2O
5. The nitrogen dioxide gas (NO2) further decomposes into nitrogen gas (N2) and oxygen gas (O2) according to the following reaction:
2NO2 → 2NO + O2
2NO → N2 + O2
6. The nitrogen gas (N2) is collected and can be used for various applications.
Key Points:
- Pure nitrogen gas (N2) can be prepared in the laboratory by heating a mixture of ammonium chloride (NH4Cl) and sodium nitrite (NaNO2).
- The reaction involves the decomposition of both ammonium chloride and sodium nitrite, resulting in the formation of nitrogen gas, sodium chloride, and water.
- The decomposition reactions are driven by the high temperature provided during the heating process.
- Nitrogen gas is collected and can be used for various purposes.
Nitrogen gas (N2) is prepared in the laboratory by the decomposition of ammonium nitrite (NH4NO2). This can be achieved by heating a mixture of ammonium chloride (NH4Cl) and sodium nitrite (NaNO2).
The reaction involved is:
2NH4Cl + 2NaNO2 → N2 + 2NaCl + 4H2O
Step-by-Step Explanation:
1. Start with a mixture of ammonium chloride (NH4Cl) and sodium nitrite (NaNO2) in a reaction vessel.
2. Heat the mixture to a high temperature, typically around 300-400°C. This provides the energy needed to drive the decomposition reaction.
3. The ammonium chloride (NH4Cl) decomposes into ammonia gas (NH3) and hydrogen chloride gas (HCl) according to the following reaction:
NH4Cl → NH3 + HCl
4. The sodium nitrite (NaNO2) decomposes into sodium nitrate (NaNO3) and nitrogen dioxide gas (NO2) according to the following reaction:
2NaNO2 → 2NaNO3 + N2O
5. The nitrogen dioxide gas (NO2) further decomposes into nitrogen gas (N2) and oxygen gas (O2) according to the following reaction:
2NO2 → 2NO + O2
2NO → N2 + O2
6. The nitrogen gas (N2) is collected and can be used for various applications.
Key Points:
- Pure nitrogen gas (N2) can be prepared in the laboratory by heating a mixture of ammonium chloride (NH4Cl) and sodium nitrite (NaNO2).
- The reaction involves the decomposition of both ammonium chloride and sodium nitrite, resulting in the formation of nitrogen gas, sodium chloride, and water.
- The decomposition reactions are driven by the high temperature provided during the heating process.
- Nitrogen gas is collected and can be used for various purposes.
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Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]a)NH4OH + NaClb)NH4 NO3 + NaClc)NH4 Cl + NaOHd)NH4 Cl + NaNO2.Correct answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]a)NH4OH + NaClb)NH4 NO3 + NaClc)NH4 Cl + NaOHd)NH4 Cl + NaNO2.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]a)NH4OH + NaClb)NH4 NO3 + NaClc)NH4 Cl + NaOHd)NH4 Cl + NaNO2.Correct answer is option 'D'. Can you explain this answer?.
Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]a)NH4OH + NaClb)NH4 NO3 + NaClc)NH4 Cl + NaOHd)NH4 Cl + NaNO2.Correct answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]a)NH4OH + NaClb)NH4 NO3 + NaClc)NH4 Cl + NaOHd)NH4 Cl + NaNO2.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]a)NH4OH + NaClb)NH4 NO3 + NaClc)NH4 Cl + NaOHd)NH4 Cl + NaNO2.Correct answer is option 'D'. Can you explain this answer?.
Solutions for Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]a)NH4OH + NaClb)NH4 NO3 + NaClc)NH4 Cl + NaOHd)NH4 Cl + NaNO2.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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