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Purple of Cassius is obtained by the add...

Purple of Cassius is obtained by the addition of `SnCl_(2)` solution to a solution of

A

`CuCl_(2)`

B

`HgCl_(2)`

C

`Hg_(2)Cl_(2)`

D

`AuCl_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`2Au^(3+)+3Sn^(2+)rarr2Au+3Sn^(4+)`. Au is adsorbed over `Sn(OH)_(4)` formed giving purple of Cassius.
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