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A blue colouration is not obtained when [1989]
- a)Ammonium hydroxide dissolves in copper sulphate
- b)Coppersulp hate solution reacts with K4[Fe(CN)6]
- c)Ferric chloride reacts with sod. ferrocyanide
- d)Anhydrous CuSO4 is dissolved in water
Correct answer is option 'B'. Can you explain this answer?
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A blue colouration is not obtained when [1989]a)Ammonium hydroxide dis...
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A blue colouration is not obtained when [1989]a)Ammonium hydroxide dis...
Explanation:
The blue colouration is due to the formation of a complex compound. The complex compound is formed by the combination of a metal ion with a ligand. The ligand is a molecule or ion that can donate a pair of electrons to the metal ion to form a coordinate bond.
a) Ammonium hydroxide dissolves in copper sulphate: When ammonium hydroxide is added to copper sulphate, a light blue precipitate of copper hydroxide is formed. The blue colouration is not obtained in this reaction because copper hydroxide is not a complex compound.
b) Copper sulphate solution reacts with K4[Fe(CN)6]: When copper sulphate solution is added to potassium ferrocyanide solution, a brown precipitate of copper ferrocyanide is formed. The blue colouration is obtained in this reaction because copper ferrocyanide is a complex compound.
c) Ferric chloride reacts with sod. ferrocyanide: When ferric chloride is added to sodium ferrocyanide solution, a dark blue precipitate of iron ferrocyanide is formed. The blue colouration is obtained in this reaction because iron ferrocyanide is a complex compound.
d) Anhydrous CuSO4 is dissolved in water: When anhydrous copper sulphate is dissolved in water, a white crystalline solid of copper sulphate pentahydrate is formed. The blue colouration is not obtained in this reaction because copper sulphate pentahydrate is not a complex compound.
Therefore, the correct option is (b) Copper sulphate solution reacts with K4[Fe(CN)6].
The blue colouration is due to the formation of a complex compound. The complex compound is formed by the combination of a metal ion with a ligand. The ligand is a molecule or ion that can donate a pair of electrons to the metal ion to form a coordinate bond.
a) Ammonium hydroxide dissolves in copper sulphate: When ammonium hydroxide is added to copper sulphate, a light blue precipitate of copper hydroxide is formed. The blue colouration is not obtained in this reaction because copper hydroxide is not a complex compound.
b) Copper sulphate solution reacts with K4[Fe(CN)6]: When copper sulphate solution is added to potassium ferrocyanide solution, a brown precipitate of copper ferrocyanide is formed. The blue colouration is obtained in this reaction because copper ferrocyanide is a complex compound.
c) Ferric chloride reacts with sod. ferrocyanide: When ferric chloride is added to sodium ferrocyanide solution, a dark blue precipitate of iron ferrocyanide is formed. The blue colouration is obtained in this reaction because iron ferrocyanide is a complex compound.
d) Anhydrous CuSO4 is dissolved in water: When anhydrous copper sulphate is dissolved in water, a white crystalline solid of copper sulphate pentahydrate is formed. The blue colouration is not obtained in this reaction because copper sulphate pentahydrate is not a complex compound.
Therefore, the correct option is (b) Copper sulphate solution reacts with K4[Fe(CN)6].
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A blue colouration is not obtained when [1989]a)Ammonium hydroxide dis...
As CN is a strong free ligand so the electrons get paired up in the 3d orbitals and therefore there is no any upaired electrons are left in the orbitals.. so we did not get the blue colour solution.
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A blue colouration is not obtained when [1989]a)Ammonium hydroxide dissolves in copper sulphateb)Coppersulp hate solution reacts with K4[Fe(CN)6]c)Ferric chloride reacts with sod. ferrocyanided)Anhydrous CuSO4 is dissolved in waterCorrect answer is option 'B'. Can you explain this answer?
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A blue colouration is not obtained when [1989]a)Ammonium hydroxide dissolves in copper sulphateb)Coppersulp hate solution reacts with K4[Fe(CN)6]c)Ferric chloride reacts with sod. ferrocyanided)Anhydrous CuSO4 is dissolved in waterCorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A blue colouration is not obtained when [1989]a)Ammonium hydroxide dissolves in copper sulphateb)Coppersulp hate solution reacts with K4[Fe(CN)6]c)Ferric chloride reacts with sod. ferrocyanided)Anhydrous CuSO4 is dissolved in waterCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A blue colouration is not obtained when [1989]a)Ammonium hydroxide dissolves in copper sulphateb)Coppersulp hate solution reacts with K4[Fe(CN)6]c)Ferric chloride reacts with sod. ferrocyanided)Anhydrous CuSO4 is dissolved in waterCorrect answer is option 'B'. Can you explain this answer?.
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