# pH Calculator

Interactive pH calculator - Explore strong/weak acids and bases, titration curves, pH indicators, and logarithmic relationships

> Canonical page: https://elysiatools.com/en/visualizations/ph-calculator

- **Category:** Chemistry

## Overview

Interactive pH calculator - Explore pH calculation for strong/weak acids and bases, titration curves with acid-base indicators, logarithmic pH scale (pH = -log[H⁺]), hydrogen ion concentration [H⁺] vs pH relationship, water autoionization constant (Kw = 10⁻¹⁴ at 25°C), strong acid (pH = -log c), strong base (pH = 14 - pOH), weak acid ([H⁺] = √(Ka·c)), weak base ([OH⁻] = √(Kb·c)), pH indicator color scale (0-14), titration simulation with equivalence point detection, comparison between strong and weak acids, concentration range 10⁻⁷ to 10¹ M, Ka/Kb range 10⁻¹⁰ to 10⁻², polyprotic acid behavior (H₂SO₄, H₃PO₄, H₂CO₃), and common acids/bases (HCl, CH₃COOH, NaOH, NH₃). Features adjustable parameters for solution type, concentration (logarithmic scale), acid dissociation constant Ka, base dissociation constant Kb, titrant concentration, titrant volume, animation speed, comparison mode (strong vs weak, mono vs polyprotic), and quick presets. Comprehensive educational content covering pH definition, strong/weak electrolyte behavior, acid-base titration principles, buffer systems, logarithmic nature of pH scale, polyprotic acids, and real-world applications in environmental science, biology, medicine, food industry, agriculture, and industrial processes

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