Energy & Electrochemistry

Gibbs energy, enthalpy, Nernst, Faraday and reaction rates.

• Activation Energy Calculator Activation energy from rate constants measured at two temperatures.
• Arrhenius Equation Calculator Rate constant from activation energy and temperature, and how much it changes at a second temperature.
• Bond Energy Calculator Estimate a reaction’s enthalpy change from the bonds broken and the bonds formed.
• Cell Potential Calculator Standard cell potential from electrode potentials, with ΔG and the equilibrium constant.
• Electroplating Thickness Calculator Plating thickness and mass from current, time, surface area and current efficiency.
• Enthalpy Change Calculator Enthalpy change in kJ/mol from a calorimetry experiment.
• Entropy Change Calculator Entropy change of a reaction from standard entropies, or of a phase change from its enthalpy and temperature.
• Faraday’s Law of Electrolysis Calculator Mass deposited in electrolysis from current and time, or the time or current for a target mass.
• Gibbs Free Energy Calculator ΔG from enthalpy, entropy and temperature, with the equilibrium constant and crossover temperature.
• Hess’s Law Calculator Add up the enthalpies of reaction steps, each scaled or reversed, to get an overall enthalpy change.
• Nernst Equation Calculator Cell potential away from standard conditions, from E°, electrons transferred, reaction quotient and temperature.
• Radioactive Decay and Half-Life Calculator Half-life arithmetic: the amount left after a time, the time to reach an amount, or the half-life itself.
• Reaction Rate Calculator Reaction rate from a rate law and concentrations, or the average rate from a change in concentration over time.