Verified Solution • 2025–26 Session moderate

QAIPMT-2006-Ch-2397: NEET 2006 Chemistry - Class 12 AIPMT-2006-Ch-2397 Solution: Copper sulphate dissolves in excess of KCN to give

Copper sulphate dissolves in excess of KCN to give

Multiple Choice Options

  • A Cu(CN)2Cu(CN)_2
  • B CuCN
  • C [Cu(CN)4]3−[Cu(CN)_4]^{3-}
  • D [Cu(CN)4]2−[Cu(CN)_4]^{2-}

Step-by-Step Verified Solution

Copper sulphate on treatment with excess of KCN forms complex K 3 [Cu(CN) 4 ] or [Cu(CN) 4 ] 3� 2CuSO 4 + 10KCN _ 2K 3 [Cu(CN) 4 ] + 2K 2 SO 4 + (CN) 2

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