Entropy Calculator

Your details

Select the thermodynamic scenario that matches your problem. Each mode uses a different formula.
Reversible heat added to the system. Positive = absorbed, negative = released. For a phase change, enter the latent heat (ΔH) here.
J
Absolute temperature at which the heat is exchanged. Celsius and Fahrenheit are converted to kelvin automatically.
Entropy change (ΔS)Entropy increases
6.6667J/K
Temperature used300K
6.6667 J/K
Entropy decreases<0Entropy increases0+

The entropy change is 6.6667 J/K.

  • A positive ΔS means the system gained entropy: the number of accessible microstates increased.
  • Temperature must be absolute, so 300 K was used in the denominator.
  • For a phase change such as melting or boiling, enter the latent heat (ΔH) as Q since the temperature is constant throughout the transition.

Next stepPair this entropy change with the enthalpy change to find spontaneity via the Gibbs free energy calculator.

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