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Question

Identify the compound B.
311410_3d8af8dab72e45c68d4986936fa5a9f2.png

A
BaO
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B
BaS
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C
BaSO4
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D
Cu2Cl2
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Solution

The correct option is C BaSO4
Cu2+(A)+ICuI2
(D) brown ppt

CuI2+ICu2I2+I3
(E) white ppt.

I3+2S2O233I+S4O26

Cu2+ ions give chocolate- brown precipitate with K4[Fe(CN)6] solution.

2Cu2++K4[Fe(CN)6]Cu2[Fe(CN)6]+4K+
(F) Chocolate-brown ppt
Reaction:
CuSO4+BaCl2BaSO4+CuCl2
(B)white ppt. (C)

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