Free reaction rate calculator — compute rate=k[A]^m[B]^n, determine reaction order and rate constant by method of initial rates, solve integrated rate laws for zero/first/second order, and identify reaction order from concentration-time graphs. Full step-by-step working
Free osmotic pressure calculator — compute π=iMRT for any solution, find molar mass of proteins by osmometry, determine van’t Hoff factor, and compare all four colligative properties. Includes tonicity predictor and reverse osmosis pressure tool
Free boiling point elevation calculator — compute ΔTb=Kb×m×i and ΔTf=Kf×m×i for any solvent, find molar mass by cryoscopy, calculate van’t Hoff factor. Includes Kb/Kf tables for 10 solvents and van’t Hoff factor presets for common solutes
Free activation energy calculator — solve k=Ae^(−Ea/RT) for any variable, find Ea using the two-point Arrhenius method, perform linear regression on Arrhenius plot (ln k vs 1/T), and visualize the potential energy diagram. Full step-by-step working
Free half life calculator — solve N=N₀(½)^(t/t½) for any variable, calculate carbon-14 dating age, find decay constant λ, and reference half-lives for 25+ isotopes. Includes types of radioactive decay with nuclear equations. Full step-by-step working
Free equilibrium constant calculator — write Kc/Kp expressions, solve ICE table problems, convert Kp to Kc using Kp=Kc(RT)^Δn, and compare Q to K to predict reaction direction. Full step-by-step solutions with color-coded ICE tables.
Free Gibbs free energy calculator — compute ΔG=ΔH−TΔS, find spontaneity, convert ΔG° to equilibrium constant K (ΔG°=−RT×lnK), calculate ΔG from cell voltage (ΔG=−nFE), and use standard Gibbs free energy of formation tables. Full step-by-step working.
Free enthalpy calculator — compute ΔH of reaction using Hess’s law, solve calorimetry problems (q=mcΔT), find enthalpy of fusion and vaporization, and use Clausius-Clapeyron to relate vapor pressure to temperature. Full step-by-step working with energy diagrams
Free stoichiometry calculator with steps. Solve mole ratio, limiting reagent, theoretical yield, percent yield, and gram-to-gram word problems for any balanced chemical equation
Free atomic number calculator. Find protons, neutrons, and electrons for any element or isotope. Includes electron configuration, ion calculator, isotope tool, and mini periodic table with step-by-step working