MCQ
Which of the following is a chocolate brown complex
- A$K_3[Cu(CN)_4]$
- B$[Cu(NH_3)_4]SO_4$
- ✓$Cu_2[Fe(CN)_6]$
- D$Na_3[Ag(S_2O_3)_2]$
✓
Answer
Correct option: C.
$Cu_2[Fe(CN)_6]$
c
$C{u^{ + 2}} + {K_4}\left[ {Fe{{\left( {CN} \right)}_6}} \right] \to \mathop {C{u_2}\left[ {Fe{{\left( {CN} \right)}_6}} \right]}\limits_{{\rm{Chocolate\, brown}}} $
$C{u^{ + 2}} + {K_4}\left[ {Fe{{\left( {CN} \right)}_6}} \right] \to \mathop {C{u_2}\left[ {Fe{{\left( {CN} \right)}_6}} \right]}\limits_{{\rm{Chocolate\, brown}}} $
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