|
pH Concentrations Scale
| Concentrations of
Hydrogen ions (H3O+) compared to distilled water |
pH |
Solutions that
typically have this pH |
H3O+ |
OH- |
| 10,000,000 |
pH = 0 |
battery acid |
1 x 100 |
1 x 10-14 |
| 1,000,000 |
pH = 1 |
stomach acid |
1 x 10-1 |
1 x 10-13 |
| 100,000 |
pH = 2 |
lemon juice, vinegar |
1 x 10-2 |
1 x 10-12 |
| 10,000 |
pH = 3 |
grapefruit, orange juice,
soda |
1 x 10-3 |
1 x 10-11 |
| 1,000 |
pH = 4 |
tomato juice, acid rain |
1 x 10-4 |
1 x 10-10 |
| 100 |
pH = 5 |
black coffee, rain water |
1 x 10-5 |
1 x 10-9 |
| 10 |
pH = 6 |
urine, saliva |
1 x 10-6 |
1 x 10-8 |
| 1 |
pH = 7 |
"pure" water |
1 x 10-7 |
1 x 10-7 |
| 1/10 |
pH = 8 |
sea water |
1 x 10-8 |
1 x 10-6 |
| 1/100 |
pH = 9 |
baking soda |
1 x 10-9 |
1 x 10-5 |
| 1/1,000 |
pH = 10 |
milk of magnesia |
1 x 10-10 |
1 x 10-4 |
| 1/10,000 |
pH = 11 |
ammonia |
1 x 10-11 |
1 x 10-3 |
| 1/100,000 |
pH =12 |
soapy water, bleach |
1 x 10-12 |
1 x 10-2 |
| 1/1,000,000 |
pH = 13 |
oven cleaner |
1 x 10-13 |
1 x 10-1 |
| 1/10,000,000 |
pH = 14 |
liquid drain cleaner |
1 x 10-14 |
1 x 100 |
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