pH of Common Substances

Liquid	pH
Stomach Acid	1.0 - 3.0
Vinegar	2.4 - 3.4
Carbonated drinks	2.0 - 4.0
Human Blood	7.3 - 7.5
Sea Water	7.8 - 8.3
Household ammonia	10.5 - 11.5
1 M NaOH	14.0