pH Calculator

Calculate pH, pOH, [H+], and [OH-] concentrations

I know the:

pH Value

7.0000

Neutral

pOH

7.0000

[H+]

1.00e-7 M

[OH-]

1.00e-7 M

pH Scale Reference

Battery AcidpH 0

Lemon JuicepH 2

TomatopH 4

Pure WaterpH 7

Baking SodapH 9

AmmoniapH 11

Drain CleanerpH 14

Interesting pH Facts

🍋

Lemon juice has pH 2 - about 100,000x more acidic than pure water

🩸

Human blood pH is tightly regulated at 7.35-7.45 - even small changes can be fatal

🌧️

Normal rain is slightly acidic (pH 5.6) due to dissolved CO2 forming carbonic acid

🦷

Tooth enamel dissolves below pH 5.5 - why sodas and citrus can damage teeth

🐠

Fish thrive in pH 6.5-8.5 - aquarium keepers carefully monitor water pH

🧹

Bleach has pH 12-13 - strong enough to dissolve organic matter

🥛

Milk is slightly acidic (pH 6.5-6.7) - sours when bacteria produce lactic acid

🔬

The pH scale was invented in 1909 by Danish chemist Soren Sorensen

pH Calculator

Calculate pH, pOH, [H+], and [OH-] concentrations

I know the:

pH Value

7.0000

Neutral

pOH

7.0000

[H+]

1.00e-7 M

[OH-]

1.00e-7 M

pH Scale Reference

Battery AcidpH 0

Lemon JuicepH 2

TomatopH 4

Pure WaterpH 7

Baking SodapH 9

AmmoniapH 11

Drain CleanerpH 14

Interesting pH Facts

🍋

Lemon juice has pH 2 - about 100,000x more acidic than pure water

🩸

Human blood pH is tightly regulated at 7.35-7.45 - even small changes can be fatal

🌧️

Normal rain is slightly acidic (pH 5.6) due to dissolved CO2 forming carbonic acid

🦷

Tooth enamel dissolves below pH 5.5 - why sodas and citrus can damage teeth

🐠

Fish thrive in pH 6.5-8.5 - aquarium keepers carefully monitor water pH

🧹

Bleach has pH 12-13 - strong enough to dissolve organic matter

🥛

Milk is slightly acidic (pH 6.5-6.7) - sours when bacteria produce lactic acid

🔬

The pH scale was invented in 1909 by Danish chemist Soren Sorensen