Explain the difference between calculated pH and experimental pH in a buffer solution?

Question

Thanks.

Answer 1

A buffer solution has the chemical property that it resists drastic pH changes for certain concentration. When you titillate the solution (experimental pH) you use a compound to determine the point of neutralization. If the solution has a buffer the exact moment of change will be delayed, and you will use a bigger amount of the solution, creating a difference between the calculated (theorical) pH and the experimental one.

Answer 2

Since you don't into the particulars of the buffer components, concentrations and temperatures, it is hard to answer your question. Moreover, how wide is the difference?

Ka values are usually not more than two-place accuracy. High concentrations (say more than half-molar) can lead to inaccuracies, since the use of concentrations in equations is an approximation.

Answer 3

calculated is what you think it should be based on mathimatical equations. experimental AKA actual PH is what you get when you check it with a calibrated meter.

Answer 4

What you would think you'd get vs what you actually got.
Tough part is why is it different.

Answer 5

Hope this helps!