H⁺ Concentration 1×10⁻⁵ mol/L to pH
A hydronium concentration of 1×10⁻⁵ mol/L produces a pH of 5, characteristic of black coffee or acid rain.
How to use this tool
- Enter [h⁺] concentration in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your ph and the full breakdown beneath it.
An [H⁺] of 1×10⁻⁵ mol/L gives a pH of 5, placing the solution in the weakly acidic range.
Frequently asked questions
- What is the difference between H⁺ and H₃O⁺?
- In water, free protons (H⁺) immediately bond to water molecules to form hydronium ions (H₃O⁺). The two notations are used interchangeably in pH calculations.
- What [H⁺] corresponds to neutral water?
- At 25 °C, pure water has [H⁺] = [OH⁻] = 1×10⁻⁷ mol/L, giving pH = 7.