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Preparation of Alcohols from Alkenes

Mineral A d...

Question

Mineral (A) $d i l . H_{2} S O_{4} ⟶$ (B) + (C) + (D) (gas)
(D) + $C H_{3} C O O)_{2} P b △ ⟶$ black ppt
$(B) + (C) (D) \to$ E (black ppt) separated from (C) by filtration
(E) + $H N O_{3} d i l . △ \to$ (F) blue coloured solution
(F) + $K_{4} [F e (C N)_{6}] ⟶$ (C) chocolate coloured ppt
(C) + $K_{3} [F e (C N)_{6}] ⟶$ (H) blue

A to H are identified as: (A) : $C u F e S_{2}$ , (B) : $C u S O_{4}$ (C) : $F e S O_{4}$ (D) : $H_{2} S$ (E) : $C u S$ (F) : $C u (N O_{3})_{2}$ (G) : $C u_{2} [F e (C N)_{6}]$ (H) : $K F e^{I I} [F e^{I I I} (C N)_{6}]$ , Turnbull's blue

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Solution

$C u F e S_{2} A d i l . H_{2} S O_{4} ⟶ C u S O_{4} (B) + F e S O_{4} (C) + H_{2} S (g a s) (D)$
$H_{2} S (D) + (C H_{3} C O O)_{2} P b △ ⟶ P b S b l a c k p p t + 2 C H_{3} C O O H$
$C u S O_{4} (B) + F e S O_{4} (C) H_{2} S (D) \to C u S b l a c k p p t, E$ separated from $F e S O_{4} (C)$ by filtration
$C u S (E) + H N O_{3} d i l . △ \to C u (N O_{3})_{2} (F), b l u e c o l o u r e d s o l u t i o n$
$C u (N O_{3})_{2} (F) + K_{4} [F e (C N)_{6}] ⟶ F e S O_{4} (C), c h o c o l a t e c o l o u r e d p p t$
$F e S O_{4} (C) + K_{3} [F e (C N)_{6}] ⟶ K F e^{I I} [F e^{I I I} (C N)_{6}] (H), T u r n b u l l^{'} s b l u e$

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Similar questions

(A) + d i l . H_{2} S O_{4} \to (B) + (C)      + (D), (g a s)

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(B) + K_{3} [F e (C N)_{6}] \to b l u e p p t . (F)

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