Homework Help: CHEM

Posted by Kristina on Sunday, April 15, 2007 at 12:07pm.

Calculate the molar solubility of gold(I) chloride (Ksp= 2.0 x 10^-13) in .10 M NaCN. The complex ion formed is [Au(CN)2]- with Kf= 2.0 x 10^38. Ignore any other competing equilibrium systems.

I'm having trouble writing an equation to start off with.

First, I had written
AuCl + NaCN <--> [Au(CN)2]- + NaCl (s)
But I can't seem to balance it correctly.

I think I know how to do the problem if I have just one reactant, but I'm not sure what to do with two. Any help would be appreciated.

The equation is not balanced because the CN- is not balanced. It can be calanced this way.
AuCl + 2NaCN ==> Na[Au(CN)2] + NaCl. In aqueous solution, the sodium salt of the complex ion will ionize into Na^+ and Au(CN)2^- while the NaCl will ionize into Na^+ and Cl^-.

No one has answered this question yet.

Answer this Question

Related Questions

Chemistry - Calculate the molar solubility of AgI in pure water. molar ...
Chemistry - Silver ion reacts with excess CN- to form a colorless complex ion,Ag...
Chemistry - (Ksp= 5.0*10^-13) 1) Calculate the molar solubility of AgBr in 3.0&...
chemistry - Calculate the solubility of silver chloride in a 0.1 mol/L solution ...
CHEM-PLEASE HELP - Calculate the molar solubility of silver chloride (AgCl) in: ...
Chemistry - What is the solubility of silver chloride in water at 25C? (Ksp = 1....
Chemistry - The determination of 4.000 mmol of ZnCl2 is performed ...
chem - True/false 1. will addding a strong acid (HNO3) to a solution that is 0....
chemistry - What is the molar solubility of silver carbonate Ag2CO3 at 25 C if ...
Chem - (a) The molar solubility of Ag2CrO4(s) at 35°C is 1.3 10-4 mol/L. ...

For Further Reading

First Name:
School Subject:
Answer: