3 calculators in this category
- Arrhenius Equation CalculatorArrhenius equation, k = A·exp(−Ea/RT), R = 8.314463 J/(mol·K)The Arrhenius equation says a rate constant rises exponentially with temperature: k = A·e^(−Ea/RT). Enter the pre-exponential…
- Nernst Equation CalculatorNernst equation, E = E° − (RT/nF)·ln Q; F = 96485.33 C/molStandard reduction potentials assume every species is at unit activity, which a real cell almost never is. The Nernst equation…
- Beer-Lambert Law CalculatorBeer-Lambert law, A = ε·l·c (IUPAC decadic absorbance)A spectrophotometer measures how much light a sample swallows, and the Beer-Lambert law turns that into a concentration: A =…
Which one do you need?
- Arrhenius Equation Calculator
- Find a rate constant from the pre-exponential factor and activation energy at any temperature, compare two temperatures, and see the Arrhenius plot.
- Nernst Equation Calculator
- Compute cell potential at non-standard concentrations with the Nernst equation. Get the mV-per-decade slope, log Q, ΔG and the equilibrium constant K.
- Beer-Lambert Law Calculator
- Convert absorbance or transmittance to concentration with A = εlc. Solve for molar absorptivity, path length or concentration, with dilution correction.