Buffers Flashcards
1
Q
Buffer definition
A
A buffer is a substance that will counteract sudden changes in PH. Thus it will maintain PH at a nearly constant value.
2
Q
All body fluids contain buffers, the 2 major buffer systems in the blood…
A
Carbonic acid and bicarbonate buffers
Weak acid and weak base
3
Q
Bicarbonate
Carbonic acid
A
HCO-3
H2CO3
4
Q
Carbonic acid and Bicarbonate reaction/equation
A
carbonic acid (equilibrium) H + Bicarbonate
5
Q
Carbonic acid (reverse reaction)
A
Cause: If acid is added (more H+)
Effect: the reverse reaction will increase using up the extra H
6
Q
Carbonic acid —————> H+ + Bicarbonate, Reaction cause and effect
A
Cause: If base is added (H+ removed)
Effect: the forward reaction will increase to replace H+
