Hydrogen ion concentration calculator

Calcolatore concentrazione di ioni idrogeno [H⁺]

Impostazioni
A) pH ⇄ [H⁺] (e pOH, [OH⁻])
Formule: [H⁺]=10⁻pH · [OH⁻]=Kw/[H⁺] · pH=−log₁₀[H⁺] · pOH=−log₁₀[OH⁻].
B) [H⁺] ⇄ pH (diretto)
C) Diluizione [H⁺] (C₁V₁=C₂V₂)
Valido per acidi forti con [H⁺] nota (C₂ = C₁·V₁/Vf).
Suggerimento: usa notazione scientifica (es. 3.2e-5). Si assume comportamento ideale e definizione classica di pH.

The pH and [H⁺] Calculator by UtileApp lets you instantly determine the hydrogen ion concentration [H⁺] and the pH of any solution — quickly, accurately, and with clear scientific detail.

Simply enter either the pH value or the [H⁺] concentration, and the app will automatically display all related quantities, applying the relationship: pH+pOH=14(at 25 °C)text{pH} + text{pOH} = 14 quad text{(at 25 °C)}pH+pOH=14(at 25 °C)

Main features

  • Instant conversions:
    Compute pH ⇄ [H⁺], pOH ⇄ [OH⁻] with direct, step-by-step calculations.
  • Dilution module:
    Apply C1V1=C2V2C_1V_1 = C_2V_2C1​V1​=C2​V2​ to find the new concentration after dilution.
  • Temperature adjustment:
    Modify the ionic product of water (Kw) to account for non-standard temperatures.
  • Flexible units and scientific notation for precise chemical analysis.

Use and benefits

Perfect for chemistry and biology students, teachers, and laboratories, this tool helps explore the relationship between pH and ion concentration clearly and intuitively. It’s also excellent for quick checks during experiments or lessons.

Example

💧 pH = 3 → [H⁺] = 1×10⁻³ mol/L
💧 [H⁺] = 1×10⁻⁷ mol/L → pH = 7

A simple, precise, and immediate tool to understand and calculate acid–base behavior in aqueous solutions.uzioni.