A) Copper cyanide
B) Copper ferrocyanide
C) Basic copper sulphate
D) Basic copper cyanide
Correct Answer: B
Solution :
\[Cu{{(N{{H}_{3}})}_{4}}{{(N{{O}_{3}})}_{2}}+4C{{H}_{3}}COOH\to Cu{{(N{{O}_{3}})}_{2}}\]\[+4C{{H}_{3}}COON{{H}_{4}}\] \[2Cu\,{{(N{{O}_{3}})}_{2}}+{{K}_{4}}[Fe\,{{(CN)}_{6}}]\to \underset{\text{chocolate}\,\,\,\text{ppt}}{\mathop{C{{u}_{2}}Fe\,{{(CN)}_{6}}}}\,\]\[+4KN{{O}_{3}}\]
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