1.Could someone provide a real world example for both an internal and an external irreversible process? Internal irreversibilities are those that occur within the system. External irreversibilities are those that occur within the surroundings, often the immediate surroundings.
2.What exactly is the difference between the Clausius Statement of the second law and the kelvin-plank statement of the second law. It sounds like they say basically the same thing but in different forms.