Biochemistry Part 5: PH Flashcards
1
Q
What happens to the PH as the concentration of H+ increases?
A
The PH decreases.
2
Q
What is the PH?
A
It s the measure of acidity and the alkalinity of a solution.
3
Q
A PH lower than 7 is?
A
Acidic.
4
Q
A PH higher than 7 is?
A
Alkaline or Basic.
5
Q
A PH at 7 is?
A
Neutral.
6
Q
Concentration of H+ by mole per liter of stomach acid is?
A
0.01
7
Q
What are Buffers?
A
Biological systems regulate their PH by using buffers, systems that resist change in PH.
8
Q
What is an important buffer in the human body?
A
bicarbonate ion (HCO3-)
9
Q
What is the PH of stomach acid?
A
2
10
Q
What is the PH of Orange juice?
A
3.5
11
Q
What is the PH of Carbonated Drinks?
A
3
12
Q
What is the PH of Acid Rain?
A
<5.6
13
Q
What is the PH of Milk?
A
6.5
14
Q
What is the PH of Human Blood?
A
7.4
15
Q
What is the PH of Seawater?
A
8.5
