buffers Flashcards
(7 cards)
1
Q
what is an acidic buffer
A
buffers with pH of less than 7
2
Q
how do acidic buffers resist an acid
A
most of the H+ Ions join with A- ions to form HA shifting equilibrium to the left reducing H+
3
Q
How do acidic buffers resist a base
A
most of the OH - react with H+ To form water
causes more of HA to dissociate into H+ to shift equilibrium right
4
Q
how is the pH of blood maintained by buffers
A
carbonic acid hydrogencarbonate buffer system
5
Q
what happens if blood is too acidic
A
HCO3 - ions from buffer system react with excess H+ and equilibrium shifts left
6
Q
what happens if blood pH is too high
A
H2CO3 ions dissociates and equilbrium shifts to right increasing H+ Conc
7
Q
A
