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In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation of
- a)K₃[Fe(CN)₆]
- b)KFe[Fe(CN)₆]
- c)FeSO₄.Fe(CN)₆
- d)Fe₄[Fe(CN)₆]₃
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
In any ferric salt, on adding potassium ferrocyanide, a prussian blue ...
Formation of Prussian Blue
Introduction:
When potassium ferrocyanide is added to any ferric salt, a blue-colored complex called Prussian blue is formed. This reaction is widely used for the detection of ferric ions in various chemical and biological samples. The formation of Prussian blue is mainly due to the formation of KFe[Fe(CN)6] complex.
Explanation:
The reaction can be represented as follows:
Fe3+ + 4[Fe(CN)6]4- → KFe[Fe(CN)6] + 3K+
Step 1: Formation of Ferric salt:
The reaction starts with the addition of a ferric salt, which is any compound containing Fe3+ ions. Examples of ferric salts include ferric chloride (FeCl3), ferric sulfate (Fe2(SO4)3), or ferric nitrate (Fe(NO3)3). These salts dissociate in water to produce Fe3+ ions.
Step 2: Addition of potassium ferrocyanide:
Potassium ferrocyanide (K4Fe(CN)6) is then added to the ferric salt solution. Potassium ferrocyanide dissociates in water to produce K+ and [Fe(CN)6]4- ions.
Step 3: Formation of Prussian blue:
The Fe3+ ions from the ferric salt react with [Fe(CN)6]4- ions to form a complex called KFe[Fe(CN)6]. This complex has a deep blue color, giving rise to the characteristic Prussian blue color. The reaction occurs due to the strong affinity of Fe3+ ions for cyanide ligands.
Overall reaction:
Fe3+ + 4[Fe(CN)6]4- → KFe[Fe(CN)6] + 3K+
Explanation of Correct Answer:
The correct answer is option 'B' - KFe[Fe(CN)6]. This is because the formation of Prussian blue involves the complex KFe[Fe(CN)6]. The other options (option 'A' - K[Fe(CN)6], option 'C' - FeSO.Fe(CN), and option 'D' - Fe[Fe(CN)6]) do not correctly represent the complex formed in the reaction.
Introduction:
When potassium ferrocyanide is added to any ferric salt, a blue-colored complex called Prussian blue is formed. This reaction is widely used for the detection of ferric ions in various chemical and biological samples. The formation of Prussian blue is mainly due to the formation of KFe[Fe(CN)6] complex.
Explanation:
The reaction can be represented as follows:
Fe3+ + 4[Fe(CN)6]4- → KFe[Fe(CN)6] + 3K+
Step 1: Formation of Ferric salt:
The reaction starts with the addition of a ferric salt, which is any compound containing Fe3+ ions. Examples of ferric salts include ferric chloride (FeCl3), ferric sulfate (Fe2(SO4)3), or ferric nitrate (Fe(NO3)3). These salts dissociate in water to produce Fe3+ ions.
Step 2: Addition of potassium ferrocyanide:
Potassium ferrocyanide (K4Fe(CN)6) is then added to the ferric salt solution. Potassium ferrocyanide dissociates in water to produce K+ and [Fe(CN)6]4- ions.
Step 3: Formation of Prussian blue:
The Fe3+ ions from the ferric salt react with [Fe(CN)6]4- ions to form a complex called KFe[Fe(CN)6]. This complex has a deep blue color, giving rise to the characteristic Prussian blue color. The reaction occurs due to the strong affinity of Fe3+ ions for cyanide ligands.
Overall reaction:
Fe3+ + 4[Fe(CN)6]4- → KFe[Fe(CN)6] + 3K+
Explanation of Correct Answer:
The correct answer is option 'B' - KFe[Fe(CN)6]. This is because the formation of Prussian blue involves the complex KFe[Fe(CN)6]. The other options (option 'A' - K[Fe(CN)6], option 'C' - FeSO.Fe(CN), and option 'D' - Fe[Fe(CN)6]) do not correctly represent the complex formed in the reaction.
Community Answer
In any ferric salt, on adding potassium ferrocyanide, a prussian blue ...
K4[ Fe(cn)6] + Fe4[ Fe(cn)6]2 =>>
KFe[Fe( cn)6 ] OK
KFe[Fe( cn)6 ] OK
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In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. Can you explain this answer?
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In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. 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 In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. Can you explain this answer?.
In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. 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 In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. Can you explain this answer?.
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In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. Can you explain this answer?, a detailed solution for In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation ofa)K[Fe(CN)]b)KFe[Fe(CN)]c)FeSO.Fe(CN)d)Fe[Fe(CN)]Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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