Difference between second and third law of thermodynamic
The second law of thermodynamics states that the entropy of an isolated system always increases or remains constant over time. It essentially defines the direction of natural processes and identifies the concept of irreversibility.
On the other hand, the third law of thermodynamics states that the entropy of a system approaches zero as the temperature approaches absolute zero (0 Kelvin). This law establishes a fundamental reference point for the measurement of entropy, implying that a perfect crystal at absolute zero has zero entropy.
In summary, the second law deals with the overall increase in entropy and the tendency of systems to move towards equilibrium, while the third law focuses on the behavior of entropy at extremely low temperatures and the establishment of a reference point for entropy measurement.