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The equilibrium 2 CuIhArr Cu+Cu^(II) ...

The equilibrium `2 CuIhArr Cu+Cu^(II)`
In aqueous medium at `25^@C` shifts towards the left in the presence of

A

`NO_(3)^(ɵ)`

B

`Cl^(ɵ)`

C

`SCN^(ɵ)`

D

`CN^(ɵ)`

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
`2Cu^(I) hArr Cu^(0)+Cu^(II)`
`Cl^(ɵ)` and `CN^(ɵ)` both make precipite with `Cu^(I)` and hence drive the reaction to the left.
Cupric thicyanate `Cu(SCN)_(2)`, black power, insoluble in water, radily turning into cuprous thiocyanate `Cu(SCN)` a whitish yellow power, hence it also drives the equilibrium to the left.
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