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Chemistry - Dissolving Precipitates

  • Thread starter Jeann25
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  • #1
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Homework Statement



Write an overall net ionic equation and calculate K for the reaction where CuCl (Ksp = 1.9 x 10^-7) is dissolved by NaCN to from [Cu(CN)2]- Kf = 1.0 x 10^16).

Homework Equations





The Attempt at a Solution



The net ionic equation I've come up with is:

CuCl + Na(CN)2- --> Cu(CN)2- + NaCl

The equilibrium equations to figure K that I came with are:

CuCl --> Cu+ + Cl-
2CN- + Cu+ --> [Cu(CN)2]-

Am I on the right track here, or am I completely off? How would I then determine K from this? How do I know when it's 1/Ksp or just Ksp?
 

Answers and Replies

  • #2
Borek
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The net ionic equation I've come up with is:

CuCl + Na(CN)2- --> Cu(CN)2- + NaCl
NaCl in net ionic?



 

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