Consider the two diagrams that follow. (d) Would similar relationships hold for the work involved in each process?

Video transcript

Welcome back everyone in this example. We're considering our entropy diagrams below. We're told that in each diagram knowing two values of entropy change can give you the value of the third were asked that if our diagram was for work instead of entropy would the same relationship still hold true. So would we still be able to tell our third value for work based on values one and two for work. So we should recall that entropy is represented by the symbol H. And we would show the change in NlB as delta H. We would recall And so we also want to recall that this is describing the heat of a system. Specifically. We want to recall that entropy can be calculated by taking our internal energy of our system added to the product of its pressure times the volume of our system. And we want to recall last that entropy is a state function. And so we would say that therefore how a system attains its final state does not matter. So in other words, our final entropy value being our third entropy value is not going to be dependent on the path that our system takes to get to this final entropy value. We want to recall that work is not a state function and is path dependent, meaning that the work done in any direction to or by a system will matter as far as the final value for work until we can say therefore the direction with which work is achieved matters. And so for our final answer we would say that thus the relationship does not apply And so our final answer is going to be that work is not a state function and so know the relationship does not apply. So what's highlighted in yellow? Are our final answers? Or is our final answer? I hope that everything that I reviewed was clear. If you have any questions, please leave them down below and I will see everyone in the next practice video.