12.2.2 - Buffer solutions Flashcards
1
Q
Explain what is meant by a buffer solution.
A
Solutions that resist slight changes in pH
When small amounts of acid, base and water are added.
2
Q
What are 2 ways that buffer solutions can be made?
A
Weak acid + conjugate base
weak base + conjugate acid
3
Q
Why do buffer solutions maintain a constant pH?
A
The concentration of the weak acid and its conjugate base remain fairly constant.
4
Q
What is the Henderson - Hasselbalch equation for calculating the pH of buffer solutions?
A
H+ = Ka x acid/salt
4
Q
What is the buffer maintained in our blood?
A
Carbonic acid - hydrogencarbonate buffer
