Question

Which aspect of a thermodynamic process is respectively addressed by the first and the second law of thermodynamics ?

Answer 1

The first law of thermodynamics, also known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. To be said as a thermodynamic aspect, The internal energy of an isolated system remains constant.

The second law of thermodynamics says that the entropy of any isolated system always increases. That is  the entropy of the universe only increases. To be said as a thermodynamic aspect,it is also known as Carnot's rule or limit. It states that for all heat engines between two heat reservoirs, a Carnot heat engine is most the efficient than any engine, operating in any cycle between the same reservoirs, regardless of the working substance used.