H+ to PH Calculator

pOH:

[H⁺] Unit:

[OH⁻] Unit:

pH Value:

[H⁺] Concentration:

[OH⁻] Concentration:

1. What is the pOH to [H⁺], [OH⁻], and pH Calculator?

Definition: This calculator determines the pH, [H⁺] concentration, and [OH⁻] concentration of a solution based on its pOH value, with customizable units for [H⁺] and [OH⁻].

Purpose: It helps chemists, students, and researchers analyze the acidity or basicity of aqueous solutions, useful in chemistry, biology, and environmental science.

2. How Does the Calculator Work?

The calculator uses these relationships:

\[ \text{pH} = 14 - \text{pOH} \, \text{(at 25°C)} \] \[ [\text{H}^+] = 10^{-\text{pH}} \] \[ [\text{OH}^-] = 10^{-\text{pOH}} \] \[ K_w = [\text{H}^+] \times [\text{OH}^-] = 1.0 \times 10^{-14} \, \text{(at 25°C)} \]

Where:

\( \text{pOH} \) — Negative logarithm of [OH⁻] concentration
\( [\text{H}^+] \) — Hydrogen ion concentration (in selected units: M, mM, µM, or nM)
\( [\text{OH}^-] \) — Hydroxide ion concentration (in selected units: M, mM, µM, or nM)
\( K_w \) — Ionization constant of water

Explanation: Enter a pOH value, select units for [H⁺] and [OH⁻] (M, mM, µM, or nM), and the calculator computes pH, [H⁺], and [OH⁻] in scientific notation, assuming standard conditions (25°C).

3. Importance of pOH, pH, and Ion Concentrations

Details: Understanding pOH, pH, and ion concentrations is crucial for assessing solution acidity or basicity, biological processes, industrial applications, and environmental conditions. These values guide chemical reactions, buffer design, and health-related analyses, with units like mM or µM often used in biochemical contexts.

4. Using the Calculator

Tips: Enter a positive pOH value, select units for [H⁺] and [OH⁻] (M, mM, µM, or nM), and click "Calculate." Results show pH (to 2 decimal places), [H⁺], and [OH⁻] (in scientific notation, e.g., 1.00000e-12, with selected units).

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