Cinética de Reações - Calculadora

Q: How should I format data for the fitting and Arrhenius modes?

For data fitting, paste time and concentration pairs as t, A on separate lines (all A values must be positive). For Arrhenius plots, paste T, k pairs with T in kelvins and k > 0. The calculator performs straight-line fits to the transformed data and reports slopes, intercepts, R² and kinetic parameters.

Como usar (3 passos)

Choose a mode: integrated rate law, data fitting, or Arrhenius.
Enter A₀, k and t for theory, paste measured (t, [A]) or (T, k) data for fitting.
Read off [A](t), fraction remaining, t₁/₂, best-fit order and Arrhenius parameters, then copy the URL to share the setup.

A default 1st-order example and small datasets are preloaded so you can see results and plots immediately.

Entradas

Pick a mode, adjust the example numbers or paste your own data. Be sure that the units of k and t (or T and k) are consistent within a given calculation.

Integrated rate law Data fitting (0th/1st/2nd) Arrhenius (ln k vs 1/T)

Reaction order n

Initial concentration [A]₀ (mol/L)

Rate constant k (units depend on order)

For 0th order k has units of mol·L⁻¹·time⁻¹, for 1st order time⁻¹, and for 2nd order L·mol⁻¹·time⁻¹.

Time t (consistent with k)

Resultados

Mode: Integrated rate law

This section summarizes the main quantities computed from your inputs (concentration, fraction remaining, half-life, fitted constants and Arrhenius parameters).

Como é calculado

Steps will appear here after calculation.

FAQ

Which reaction orders does this tool support?

It focuses on simple 0th, 1st and 2nd order kinetics for a single reactant A, using the integrated forms [A](t) = [A]₀ − k t, ln[A] = ln[A]₀ − k t and 1/[A] = 1/[A]₀ + k t. For more complex mechanisms or mixed orders, treat this calculator as a first diagnostic rather than a full kinetic model.

How should I format data for the fitting and Arrhenius modes?

For data fitting, paste time and concentration pairs as t, A on separate lines (all A values must be positive). For Arrhenius plots, paste T, k pairs with T in kelvins and k > 0. The calculator performs straight-line fits to the transformed data and reports slopes, intercepts, R² and kinetic parameters.

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