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Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identification of Ca2+, Ba2+ and Sr2+ ions (in group V) during mixture analysis because :
- a)Mg2+ ions will also be precipitated.
- b)Concentration of CO32– ions is very low.
- c)Sodium ions will react with acid radicals.
- d)Na+ ions will interfere with the detection of Ca2+, Ba2+, Sr2+ ions.
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identif...
Explanation:
The identification of Ca2+, Ba2+, and Sr2+ ions in group V during mixture analysis is typically done using (NH4)2CO3 as a reagent. However, sodium carbonate (Na2CO3) cannot be used as a substitute for (NH4)2CO3 for several reasons.
Reasons why sodium carbonate cannot be used:
1. Precipitation of Mg2+ ions:
When (NH4)2CO3 is added to a solution containing Ca2+, Ba2+, and Sr2+ ions, it forms precipitates of their respective carbonates. However, if sodium carbonate is used instead, it will also precipitate Mg2+ ions. This is because Mg2+ ions also form insoluble carbonates with carbonate ions. Therefore, the use of Na2CO3 will result in the precipitation of Mg2+ ions along with Ca2+, Ba2+, and Sr2+ ions, making it difficult to identify them.
2. Low concentration of CO32- ions:
Another reason why sodium carbonate cannot be used is the low concentration of carbonate ions (CO32-) in Na2CO3. When (NH4)2CO3 dissolves in water, it dissociates into ammonium ions (NH4+) and carbonate ions (CO32-). These carbonate ions are responsible for the precipitation of Ca2+, Ba2+, and Sr2+ ions as carbonates. However, Na2CO3 has a lower concentration of carbonate ions compared to (NH4)2CO3, which may result in incomplete or weak precipitation of the metal carbonates.
3. Reaction of sodium ions with acid radicals:
In the process of mixture analysis, acid radicals are often tested simultaneously with the cations. If Na2CO3 is used, the sodium ions (Na+) present in Na2CO3 can react with acid radicals, leading to unwanted reactions and interference in the identification of Ca2+, Ba2+, and Sr2+ ions.
4. Interference with the detection of Ca2+, Ba2+, and Sr2+ ions:
Lastly, the presence of Na+ ions can interfere with the detection of Ca2+, Ba2+, and Sr2+ ions. This interference can occur during the formation of precipitates, separation techniques, or when performing specific tests for these ions. Therefore, it is essential to use (NH4)2CO3 instead of Na2CO3 to avoid any interference and obtain accurate identification of the desired cations.
Conclusion:
In summary, the use of sodium carbonate (Na2CO3) as a substitute for (NH4)2CO3 for the identification of Ca2+, Ba2+, and Sr2+ ions during mixture analysis is not recommended due to the precipitation of Mg2+ ions, low concentration of CO32- ions, reaction of sodium ions with acid radicals, and interference with the detection of the desired ions. It is advisable to adhere to the prescribed reagents and procedures to ensure accurate identification of the cations in group V.
The identification of Ca2+, Ba2+, and Sr2+ ions in group V during mixture analysis is typically done using (NH4)2CO3 as a reagent. However, sodium carbonate (Na2CO3) cannot be used as a substitute for (NH4)2CO3 for several reasons.
Reasons why sodium carbonate cannot be used:
1. Precipitation of Mg2+ ions:
When (NH4)2CO3 is added to a solution containing Ca2+, Ba2+, and Sr2+ ions, it forms precipitates of their respective carbonates. However, if sodium carbonate is used instead, it will also precipitate Mg2+ ions. This is because Mg2+ ions also form insoluble carbonates with carbonate ions. Therefore, the use of Na2CO3 will result in the precipitation of Mg2+ ions along with Ca2+, Ba2+, and Sr2+ ions, making it difficult to identify them.
2. Low concentration of CO32- ions:
Another reason why sodium carbonate cannot be used is the low concentration of carbonate ions (CO32-) in Na2CO3. When (NH4)2CO3 dissolves in water, it dissociates into ammonium ions (NH4+) and carbonate ions (CO32-). These carbonate ions are responsible for the precipitation of Ca2+, Ba2+, and Sr2+ ions as carbonates. However, Na2CO3 has a lower concentration of carbonate ions compared to (NH4)2CO3, which may result in incomplete or weak precipitation of the metal carbonates.
3. Reaction of sodium ions with acid radicals:
In the process of mixture analysis, acid radicals are often tested simultaneously with the cations. If Na2CO3 is used, the sodium ions (Na+) present in Na2CO3 can react with acid radicals, leading to unwanted reactions and interference in the identification of Ca2+, Ba2+, and Sr2+ ions.
4. Interference with the detection of Ca2+, Ba2+, and Sr2+ ions:
Lastly, the presence of Na+ ions can interfere with the detection of Ca2+, Ba2+, and Sr2+ ions. This interference can occur during the formation of precipitates, separation techniques, or when performing specific tests for these ions. Therefore, it is essential to use (NH4)2CO3 instead of Na2CO3 to avoid any interference and obtain accurate identification of the desired cations.
Conclusion:
In summary, the use of sodium carbonate (Na2CO3) as a substitute for (NH4)2CO3 for the identification of Ca2+, Ba2+, and Sr2+ ions during mixture analysis is not recommended due to the precipitation of Mg2+ ions, low concentration of CO32- ions, reaction of sodium ions with acid radicals, and interference with the detection of the desired ions. It is advisable to adhere to the prescribed reagents and procedures to ensure accurate identification of the cations in group V.
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Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identif...
If Na2CO3 is used in place of (NH4) ,CO3. It will precipitate group V radicals as well as magnesium radicals. The reason for this is the high ionization of Na2CO3 in water into Na+ and CO32–. Now the higher concentration of CO32– is available which exceeds the solubility product of group V radicals as well as that of magnesium radicals.
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Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identification of Ca2+, Ba2+ and Sr2+ ions (in group V) during mixture analysis because :a)Mg2+ ions will also be precipitated.b)Concentration of CO32– ions is very low.c)Sodium ions will react with acid radicals.d)Na+ ions will interfere with the detection of Ca2+, Ba2+, Sr2+ ions.Correct answer is option 'A'. Can you explain this answer?
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Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identification of Ca2+, Ba2+ and Sr2+ ions (in group V) during mixture analysis because :a)Mg2+ ions will also be precipitated.b)Concentration of CO32– ions is very low.c)Sodium ions will react with acid radicals.d)Na+ ions will interfere with the detection of Ca2+, Ba2+, Sr2+ ions.Correct answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identification of Ca2+, Ba2+ and Sr2+ ions (in group V) during mixture analysis because :a)Mg2+ ions will also be precipitated.b)Concentration of CO32– ions is very low.c)Sodium ions will react with acid radicals.d)Na+ ions will interfere with the detection of Ca2+, Ba2+, Sr2+ ions.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identification of Ca2+, Ba2+ and Sr2+ ions (in group V) during mixture analysis because :a)Mg2+ ions will also be precipitated.b)Concentration of CO32– ions is very low.c)Sodium ions will react with acid radicals.d)Na+ ions will interfere with the detection of Ca2+, Ba2+, Sr2+ ions.Correct answer is option 'A'. Can you explain this answer?.
Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identification of Ca2+, Ba2+ and Sr2+ ions (in group V) during mixture analysis because :a)Mg2+ ions will also be precipitated.b)Concentration of CO32– ions is very low.c)Sodium ions will react with acid radicals.d)Na+ ions will interfere with the detection of Ca2+, Ba2+, Sr2+ ions.Correct answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identification of Ca2+, Ba2+ and Sr2+ ions (in group V) during mixture analysis because :a)Mg2+ ions will also be precipitated.b)Concentration of CO32– ions is very low.c)Sodium ions will react with acid radicals.d)Na+ ions will interfere with the detection of Ca2+, Ba2+, Sr2+ ions.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Sodium Carbonate cannot be used in place of (NH4)2CO3 for the identification of Ca2+, Ba2+ and Sr2+ ions (in group V) during mixture analysis because :a)Mg2+ ions will also be precipitated.b)Concentration of CO32– ions is very low.c)Sodium ions will react with acid radicals.d)Na+ ions will interfere with the detection of Ca2+, Ba2+, Sr2+ ions.Correct answer is option 'A'. Can you explain this answer?.
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