Table 2-3The pH Scale

Concentration of H+ Ions (mol/L)pHExample
↑↑ Increasing acidity10−0 0
10−1 1Gastric fluids
10−2 2Lemon juice
10−3 3Vinegar
10−4 4Acid soil
10−5 5Lysosomes
10−6 6Cytoplasm of contracting muscle
Neutral10−7 7Pure water and cytoplasm
10−8 8Sea water
10−9 9Very alkaline natural soil
10−1010Alkaline lakes
10−1111Household ammonia
↓↓ Increasing alkalinity10−1212Lime (saturated solution)

From: Section 2.3, Chemical Equilibrium

Cover of Molecular Cell Biology
Molecular Cell Biology. 4th edition.
Lodish H, Berk A, Zipursky SL, et al.
New York: W. H. Freeman; 2000.
Copyright © 2000, W. H. Freeman and Company.

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