Buffer and Titrations Flashcards
1
Q
What is the log(2), (10), (.1)
A
0.3, 1, -1
2
Q
What defines a good buffer:
A
weak acid and conjugate base
3
Q
What are some features of the 1/2 equiv point
A
- equimolar amount of acid and base
- H-H: pH = pKa
- 50% deprotonated species
- midpoint of horizontal region
4
Q
what are features of equiv point?
A
- amount of acid equals amount of base added
- species is fully nuetralized
- mid point of vertical region
5
Q
when will an indicator change color? what kind of titration is this?
A
at end point, after equiv point
- use weak acid or base
- colorimetric
- pKa usu near pH
6
Q
What is equiv point of strong acid and strong base?
A
7
7
Q
what is equiv piont of weak acid and strong base?
A
> 7
8
Q
what is equiv point of strong acid and weak base?
A
<7
9
Q
what are the units of molarity?
A
mol equiv / L
- usually multiple molarity by number of protons/OH can be given up
