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A salt is heated first with dil. H₂SO₄. No reaction takes place. It may be
- a)Nitrate
- b)Oxalate
- c)Sulphide
- d)Sulphate
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
A salt is heated first with dil. H₂SO₄. No reaction takes place. It ma...
Explanation:
When a salt is heated with dilute H₂SO₄, it can undergo various reactions based on its composition. In this case, the salt does not react with dilute H₂SO₄, indicating that it is a sulphate.
Reasons for No Reaction:
When a salt is heated with dilute H₂SO₄, the following reactions can take place:
1. Acid-base reaction: If the salt is basic in nature, it reacts with H₂SO₄ to form salt of sulphuric acid and water. Example: NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O
2. Redox reaction: If the salt contains reducing or oxidizing agents, it can undergo a redox reaction with H₂SO₄. Example: FeSO₄ + H₂SO₄ → Fe₂(SO₄)₃ + SO₂ + H₂O
3. Decomposition reaction: If the salt is unstable, it may decompose on heating to form new products. Example: CaCO₃ → CaO + CO₂
Since no reaction takes place in this case, the salt must be a sulphate, which is stable and does not undergo any of the above reactions with dilute H₂SO₄.
Conclusion:
When a salt is heated with dilute H₂SO₄ and no reaction takes place, it indicates that the salt is a sulphate.
When a salt is heated with dilute H₂SO₄, it can undergo various reactions based on its composition. In this case, the salt does not react with dilute H₂SO₄, indicating that it is a sulphate.
Reasons for No Reaction:
When a salt is heated with dilute H₂SO₄, the following reactions can take place:
1. Acid-base reaction: If the salt is basic in nature, it reacts with H₂SO₄ to form salt of sulphuric acid and water. Example: NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O
2. Redox reaction: If the salt contains reducing or oxidizing agents, it can undergo a redox reaction with H₂SO₄. Example: FeSO₄ + H₂SO₄ → Fe₂(SO₄)₃ + SO₂ + H₂O
3. Decomposition reaction: If the salt is unstable, it may decompose on heating to form new products. Example: CaCO₃ → CaO + CO₂
Since no reaction takes place in this case, the salt must be a sulphate, which is stable and does not undergo any of the above reactions with dilute H₂SO₄.
Conclusion:
When a salt is heated with dilute H₂SO₄ and no reaction takes place, it indicates that the salt is a sulphate.
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Community Answer
A salt is heated first with dil. H₂SO₄. No reaction takes place. It ma...
Both S are in same oxidation state
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A salt is heated first with dil. H₂SO₄. No reaction takes place. It may bea)Nitrateb)Oxalatec)Sulphided)SulphateCorrect answer is option 'D'. Can you explain this answer?
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