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Assertion: When H(2)S is passed through ...

Assertion: When `H_(2)S` is passed through a solution containing `[Cu(CN)_(4)]^(2-) and [Cd(CN)_(4)]^(2-)` ions, only cadmium precipitates as CdS.
Reason: The oxidation state and coordination number of cadmium in `[Cd(CN)_(4)]^(2-)` are II and 4 respectively.

A

If both (A) and (B) are correct and (R ) is the correct explqanation of (A)

B

If both (A) and (B) are correct but (R ) is not the correct explqanation of (A)

C

If (A) is correct ,but (R ) is incorrect

D

If (A) is incorrect ,but (R ) is correct

Text Solution

Verified by Experts

The correct Answer is:
b
(A) is true and its explanation is based on the stability constant of the two complex ions present in solution (R ) is also true not the correct explanation for(A)
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