pH Notes Flashcards
Molecules such as ____ and _____ dissolved in water may dissociate into charged ions, _______.
acids
bases
ionization
An _____ is a substance that when it ionizes in a ____-based solution, it increases the number of ___ in a solution.
acid
water
H+ / Hydrogen ions / protons
A _____ is a substance that when it _________ in a water-based solution, it ______ the number of H+ in a solution.
base
ionizes
decreases
pH is the _______ of the concentration of _________ in a solution.
It can be easily measured by a _____.
measurement
protons / H+ / hydrogen ions
pH strip
If blood pH rises over 7.45 that means that the concentration of ______ goes _______.
Is blood pH over 7.45 in-range or out-of-range?
protons
down
out-of-range
Our body’s organic molecules, especially _______ may not function when the pH is changed.
We need to balance pH in our bodies because _____ ____ release waste products that can change pH.
Also the _________can change the pH in our cells and fluids.
proteins
living cells
food we eat
pH scale ranges from _______.
pH = _____is neutral
pH greater than ____is basic.
acidic pH is anything _________
0 to 14
7
7
less than 7
What happens when H2O combines with CO2?
Carbonic Acid
H2CO3
What does acidosis mean?
The increase in protons has decreased blood pH below 7.35
Difference in pH scale between 2 and 3 signifies a difference of ___. pH measures what? __
Solution with pH 2 is ten times more _____ than a solution of pH 3.
if a solution A is 100 times more concentrated than solution B than the pH difference is __.
10 times / protons
concentrated
2
A buffer is a ______.
It functions to _____ the change in pH when a ___ or ___ is added to solution.
solution
minimize
base
acid
Add acid to a buffer and the buffer will combine with _____ and help _______ the pH.
It is the _____ in the buffer which binds H+
extra protons
maintain
weak base
Carbon dioxide is produced as a waste product during cell respiration.
If the body cannot get rid of CO2 it will combine with ______ in the blood and lower the blood pH.
Lungs regulate the amount of _____ in the blood.
And the kidneys regulate the amount of ______ ions in the blood.
water
CO2
bicarbonate / HCO3-
Add a _____ to a buffer and the buffer will release H+ to maintain the pH.
Most buffers consist of a weak acid and weak base
It is the ____ that releases H+ to maintain pH.
base
weak acid
3 main buffer systems of the body*
Bicarbonate
Phosphate
Protein
