#1 Free Solution Concentration Calculator 2025

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

Molar Volume Calculator Ideal Gas Real Substance Ideal Gas (Vm = RT/P) Temperature (T): °C K (Kelvin) °F Pressure (P): atm Pa (Pascal) kPa (kilopascal) mmHg (torr) psi Real Substance

Thermochemistry Calculator Select Calculation Type: Heat Transfer (q = mcΔT) Enthalpy of Reaction (from ΔH°f) Calorimetry (Constant Pressure) Show Theory & Formulas Heat Transfer Parameters Heat (q): JkJ Mass (m):

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