#1 Free Solution Concentration Calculator 2025

Gas Laws Calculator Select Gas Law: Combined Gas Law Boyle's Law (P₁V₁ = P₂V₂) Charles's Law (V₁/T₁ = V₂/T₂) Gay-Lussac's Law (P₁/T₁ = P₂/T₂) Ideal Gas Law (PV = nRT)

Advanced pH Calculator Strong Acid Strong Base Weak Acid Weak Base Buffer Solution From [H⁺] From [OH⁻] Strong Acid pH Concentration of Strong Acid (e.g., HCl, HNO₃): MmMµM Strong Base

Vapor Pressure Calculator Calculates vapor pressure at a different temperature using the Clausius-Clapeyron equation. Known Vapor Pressure (P₁): atm Pa (Pascal) kPa mmHg (torr) bar Temperature for P₁ (T₁): °C

Arrhenius Equation Calculator Calculate Rate Constant (k) Calculate Activation Energy (Ea) Calculate k₂ at T₂ Calculate Pre-exponential Factor (A) Calculate Temperature (T) Calculate Rate Constant (k) Pre-exponential Factor (A): Units