Question

What is the real life example of the second law of thermodynamics?

Answer 1

1. Second law of thermodynamics states that the entropy of an isolated system will never decrease.
2. In some systems like reversible processes and in thermodynamic equilibrium total entropy of the system remains constant.
3. This law is also known as the law of increasing entropy.
4. Mathematically we expressed the second law of entropy as $∆{\mathrm{S}}_{\mathrm{univ}}>0$ where $∆{\mathrm{S}}_{\mathrm{univ}}$ is the change of entropy of the universe.
5. The real-life example of the second law of thermodynamics is When we put ice in a glass at room temperature, the heat is released by water to melt the ice due to which the entropy of water decreases, the entropy released by water absorbs by the ice cubes, as a result, the entropy increases.
6. The entropy of ice cubes is greater than the entropy decreases and thus there is a net increase in entropy.