Buffer Solution Concentrations and Initial Conditions

[jsmith613]

Homework Statement

http://s359.photobucket.com/albums/oo40/jsmith613/?action=view&current=ChemistryQ.png

I still don't see why they tell you the initial concentrations are the same?
what if they were different?

Homework Equations

The Attempt at a Solution

 

[Simon Bridge]

I still don't see why they tell you the initial concentrations are the same?
what if they were different?

Well then you'd need different amounts of the two solutions wouldn't you?

That they start out the same is a bonus.
Try doing the math when the concentrations are not the same.

 

[jsmith613]

could u give me an example calculation for different initial concentrations
thanks