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Question

2CuSO4+K4[Fe(CN)6]A+2K2SO4.A is 
  1. None of the above
  2. Cu2[Fe(CN)6]
  3. Cu[Fe(CN)z6]
  4. Cu2[Fe(CN)4]


Solution

The correct option is B Cu2[Fe(CN)6]
The reaction can be given as: 2CuSO4+K4[Fe(CN)6]Cu2Fe(CN)6+2K2SO4
The product formed Cu2[Fe(CN)6] is called cupric ferrocyanide. The product obtained is reddish brown precipitate and this reaction is used as a test for Cu+2.

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