Difference between reversible and irreversible thermodynamic process I have been reading up (on this website) about the difference between reversible and irreversible thermodynamic process and it defines them saying that reversible processes are ideal processes while irreversible processes are the natural processes. Are these definitions correct?  

If not how are they defined?
The simplest answer in thermodynamic terms is "a reversible process is one in which the entropy generation term is zero."


  Yes, I understood that but can you explain what difference is there in the change in enthalpy, internal energy, heat, work, etc. if the process is reversible and irreversible.


For any process, all of these would be the same whether it was reversible or not. The only one that would differ would be change in entropy.