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Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' is
- a)C6H5COONa
- b)HCOONa
- c)CH3COONa
- d)Na2C2O4
Correct answer is option 'D'. Can you explain this answer?
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Sodium salt of an organic acid 'X' produces effervescence with...
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Sodium salt of an organic acid 'X' produces effervescence with...
Understanding the Organic Acid X
The problem describes an organic acid X that has specific reactions, leading us to identify the correct compound from the given options.
1. Effervescence with Conc. H2SO4
- The sodium salt of X produces effervescence with concentrated sulfuric acid (H2SO4).
- This indicates that X likely contains a carbonate or a bicarbonate, as they release carbon dioxide (CO2) when reacting with acids.
2. Reaction with Acidified Aqueous CaCl2
- X reacts with acidified aqueous calcium chloride (CaCl2) to form a white precipitate.
- This suggests that X is a salt of a weak acid that forms an insoluble compound with calcium ions. Sodium oxalate (Na2C2O4) fits this description as it forms calcium oxalate (CaC2O4), which is an insoluble white precipitate.
3. Decolourisation of Acidic KMnO4 Solution
- The white precipitate formed from the reaction with CaCl2 can decolourise acidic KMnO4.
- This behavior is characteristic of reducing agents. Oxalic acid (derived from sodium oxalate) can reduce permanganate ions (MnO4-) to manganese(II) ions (Mn2+), resulting in the decolourisation of the purple KMnO4 solution.
Conclusion
Based on the above points, the organic acid X is correctly identified as sodium oxalate (Na2C2O4), which explains all the given reactions:
- Effervescence with H2SO4 indicates carbonate salts.
- Formation of a white precipitate with CaCl2 indicates oxalate.
- Decolourisation of KMnO4 confirms it acts as a reducing agent.
Thus, the correct answer is option 'D' - Na2C2O4.
The problem describes an organic acid X that has specific reactions, leading us to identify the correct compound from the given options.
1. Effervescence with Conc. H2SO4
- The sodium salt of X produces effervescence with concentrated sulfuric acid (H2SO4).
- This indicates that X likely contains a carbonate or a bicarbonate, as they release carbon dioxide (CO2) when reacting with acids.
2. Reaction with Acidified Aqueous CaCl2
- X reacts with acidified aqueous calcium chloride (CaCl2) to form a white precipitate.
- This suggests that X is a salt of a weak acid that forms an insoluble compound with calcium ions. Sodium oxalate (Na2C2O4) fits this description as it forms calcium oxalate (CaC2O4), which is an insoluble white precipitate.
3. Decolourisation of Acidic KMnO4 Solution
- The white precipitate formed from the reaction with CaCl2 can decolourise acidic KMnO4.
- This behavior is characteristic of reducing agents. Oxalic acid (derived from sodium oxalate) can reduce permanganate ions (MnO4-) to manganese(II) ions (Mn2+), resulting in the decolourisation of the purple KMnO4 solution.
Conclusion
Based on the above points, the organic acid X is correctly identified as sodium oxalate (Na2C2O4), which explains all the given reactions:
- Effervescence with H2SO4 indicates carbonate salts.
- Formation of a white precipitate with CaCl2 indicates oxalate.
- Decolourisation of KMnO4 confirms it acts as a reducing agent.
Thus, the correct answer is option 'D' - Na2C2O4.
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Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' isa)C6H5COONab)HCOONac)CH3COONad)Na2C2O4Correct answer is option 'D'. Can you explain this answer?
Question Description
Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' isa)C6H5COONab)HCOONac)CH3COONad)Na2C2O4Correct answer is option 'D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' isa)C6H5COONab)HCOONac)CH3COONad)Na2C2O4Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' isa)C6H5COONab)HCOONac)CH3COONad)Na2C2O4Correct answer is option 'D'. Can you explain this answer?.
Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' isa)C6H5COONab)HCOONac)CH3COONad)Na2C2O4Correct answer is option 'D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' isa)C6H5COONab)HCOONac)CH3COONad)Na2C2O4Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' isa)C6H5COONab)HCOONac)CH3COONad)Na2C2O4Correct answer is option 'D'. Can you explain this answer?.
Solutions for Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' isa)C6H5COONab)HCOONac)CH3COONad)Na2C2O4Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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