Complex Ion Kf Ag(NH3)2+ 1.6x10^7 Ag(CN)2- 5.6x10^18 AgBr2- 1.3x10^7 What statem

Question

Complex Ion              Kf

Ag(NH3)2+             1.6x10^7

Ag(CN)2-                 5.6x10^18

AgBr2-                     1.3x10^7

What statements are true?

A.  Ag(NH3)2+ is more stable than Ag(CN)2- ?

B. Adding a strong acid (HNO3) to a solution that is 0.010M in Ag(NH3)2+ will tend to dissociate the complex ion into Ag+ and NH4+

C.Adding a strong acid (HNO3) to a solution that is 0.010M in AgBr2- will tend to dissociate the complex ion into Ag+ and Br-.

D. To dissolve Agl one can add either NaCN or HCN as a source of the cyanide ion. Fewer moles of NaCN would be required.

Explanation / Answer

B,D are correct

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