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Calculation of pH

Process information from secondary sources to calculate pH of strong acids given appropriate hydrogen ion concentrations


  • If the hydrogen ion concentration of a strong acid solution is known, the pH can be calculated by substituting the hydrogen ion concentration into the pH formula:
  • If the concentration of a strong acid solution is known, then the hydrogen ion concentration can be determined based on whether the acid involved is monoprotic, diprotic or triprotic:
    • The hydrogen ion concentration of a monoprotic strong acid solution is equal to the concentration of the acid itself.
    • The hydrogen ion concentration of a diprotic strong acid solution is equal to twice the concentration of the acid itself.
    • The hydrogen ion concentration of a triprotic strong acid solution is equal to three times the concentration of the acid itself.

Easychem - Calculation of pH

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