pH Scale

Explore the acidity and basicity of everyday solutions. Measure the pH and see the concentration of hydronium and hydroxide ions.

Dilution (Add/Remove Water) 1.0x

[H₃O⁺] 1.0e-7

[OH⁻] 1.0e-7

pH = −log₁₀[H₃O⁺]

[H₃O⁺][OH⁻] = 10⁻¹⁴

pH < 7 is Acidic

pH > 7 is Basic

pH Meter

7.00

Neutral