Powers of Ten and pH
How does this relate to pH? The numbers on the pH scale
run from 0 to 14. Substances with lower pH's have much much more
hydrogen, or H+, than substances with higher pH's. For
example:
Vinegar,
with a pH of 3, has ten times more H+ than lemon juice, with
a pH of 4.
Lemon juice,
with a pH of 4, has ten times more H+ than aspirin water, with
a pH of 5.
Aspirin water,
with a pH of 5, has ten times more H+ than milk, with a pH of
6.
Vinegar has 10 X 10 X 10 or 1,000 times more
H+ than milk. That's a lot! In other words, every notch down
the pH scale has ten times the amount of hydrogen as the notch
above it. See the table below for more details.
pH Scale 
Concentration of H+ 
Acid, Base, or Neutral 
0 
1 
acid 
1 
0.1 
acid 
2 
0.01 
acid 
3 
0.001 
acid 
4 
0.0001 
acid 
5 
0.00001 
acid 
6 
0.000001 
acid 
7 
0.0000001 
neutral 
8 
0.00000001 
base 
9 
0.000000001 
base 
10 
0.0000000001 
base 
11 
0.00000000001 
base 
12 
0.000000000001 
base 
13 
0.0000000000001 
base 
14 
0.00000000000001 
base 
Powers of Ten
