Calculadora de Cambio de Entropía
Calcula el cambio de entropía en procesos termodinámicos. Determina ΔS a partir de calor transferido y temperatura para análisis termodinámico.
Entropy Change
3.3333 J/K
Entropy Change vs Heat Transferred
Fórmula
Entropy Change
Entropy measures the disorder or unavailability of energy in a system.
Formula
DeltaS = Q / T
for a reversible process at constant temperature. Positive DeltaS means entropy increases (heat absorbed). The second law states that total entropy of an isolated system never decreases.
Ejemplo Resuelto
1000 J of heat absorbed at 300 K.
- 01DeltaS = Q / T
- 02DeltaS = 1000 / 300
- 03DeltaS = 3.333 J/K
Preguntas Frecuentes
What is entropy in simple terms?
Entropy quantifies the number of microscopic arrangements a system can have. Higher entropy means more disorder and less available useful energy.
Can entropy decrease?
Locally, yes (a refrigerator decreases the entropy of its contents). But the total entropy of the universe always increases or stays the same.
What is the second law of thermodynamics?
The total entropy of an isolated system can only increase over time. Heat flows spontaneously from hot to cold, never the reverse.
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