Chemistry Equilibria TBR Problem

[Jay2910]

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Hello Everyone,

I am having "a problem" with problem 65 of Passage X page 212.
The link is below
http://i21.photobucket.com/albums/b265/dronzer115/ChemistryEquilibriaProblem.jpg

I don't understand mainly how to choose between B and D
The book explanation is a little confusing.

Help is much appreciated!

 

[pm1]

Hello Everyone,

I am having "a problem" with problem 65 of Passage X page 212.
The link is below
http://i21.photobucket.com/albums/b265/dronzer115/ChemistryEquilibriaProblem.jpg

I don't understand mainly how to choose between B and D
The book explanation is a little confusing.

Help is much appreciated!

is it B?

 

[ridethecliche]

B would be my guess as well.

It's Ag2, so having some Ag in solution isn't as big of a hindrance as having the same amount of S.

 

[Jay2910]

Yes the answer is B.....mathematically though I don't understand how to justify it. Do you both know what the book is even trying to say?

 

[Jay2910]

Seriously people, am I the only one that doesn't get this problem? If you know the answer, please try to explain it to me. I am really trying to figure this one out.

 

[cloak25]

I just looked at this problem in the book. The answer is actually D according to TBR. I remember I was struggling with this question as well. I don't quite remember how to explain why D is correct though. I think it has something to do with sulfur being a dianion vs. silver being a cation...

 

[Gaborik10]

It's choice D, because the molecule in question is Ag(2)S. So for each of those molecules that dissociates, two Ag's will be released and only one S. So the .01 Ag solution will become saturated with Ag faster than the .01 S solution will become saturated with the S. Make sense? That's the way I approached it.