[itsme03]

1) why would the theoretical and experimental pH of a solution be in good agreement? what are some things that could cause the experimental pH of a solution to be different than the theoretical pH?

2) How do you identify a solution as a buffer or "optimum" buffer?

3) how do you calculate the initial moles of a compound from a few different solutions? for example, how do i know the initial moles of acetate from a solution with 3.0 mL of 0.1 M of both acetate and acetic acid AND 3.0 mL of 0.1 M HCl?

thank you in advance.

[Borek]

Please read forum rules.

[Arkcon]

Your first two are definitions, or jargon, or trivia.  You will find the correct answer in your textbook or class notes, because they are unique to your class.  We don't really know the answer, and there's no hint we can give to help you.

The third one will use a bunch of formulas.  As a start, do you know which ones?  Can you start by breaking down the words into chemical formulas?  Step by step is a good way for you to learn, and for us to teach you.

[AWK]

how do i know the initial moles of acetate from a solution with 3.0 mL of 0.1 M of both acetate and acetic acid AND 3.0 mL of 0.1 M HCl?

Calculate stoichiometry!. The stronger acid replace the weaker one.