Homework Help: chemistry

Posted by Jin on Monday, July 19, 2010 at 3:13am.

Solid NaI is slowly added to a soln that is 0.010M in Cu+ and 0.010M in Ag+.
a. Which compound will begin to precipitate first?
b. Calculate [Ag+] when CuI just begins to precipitate/
c. What percent of Ag+ remains in solution at this point?

chemistry - DrBob222, Monday, July 19, 2010 at 12:39pm
a. Compare Ksp for CuI with Ksp for AgI. obviously, the salt with the smaller Ksp will ppt first.

b.
(Ag^+)(I^-)...Ksp for AgI
----------- = ----------- = about 7E-5
(Cu^+)(I^-)...Ksp for CuI
The value will depned upon the Ksp values you used so the answer should be close to 7E-5 but it may differ somewhat. Then you rearrange the equation to give (Ag^+)= 7E-5(0.01) = ??

c. (amount Ag remaining/original amount)*100 = ??

Answer this Question

Related Questions

Chemistry - Solid NaI is slowly added to a solution that is .010M in Cu+ and ....
chemistry - Find the pH of a 0.010M solution of NH4ClO4 and the pH of a 0.010M ...
chem - True/false 1. will addding a strong acid (HNO3) to a solution that is 0....
Chemistry - how do I find the pH of a buffer solution given that 0.010M NH3 ...
Chemistry - For the following balanced equation: 2 Ag+ (aq) + Cu(s) Cu2+ (aq...
chemistry - For the following balanced equation: 2 Ag+ (aq) + Cu(s) Cu2+ (aq...
Chemistry - Posted by Hannah on Saturday, April 18, 2009 at 3:05pm. Find the pH ...
Chemistry - For the following balanced equation: 2 Ag+ (aq) + Cu(s) ---&gt...
Chemistry - For the following balanced equation: 2 Ag+ (aq) + Cu(s)--> ...
chemistry - how much 10M HNO3 must be added to 1L of a buffer that is .010M ...

For Further Reading

First Name:
School Subject:
Answer: