Work

[Valeria Viera 1B]

There are so many work equations and equations derived from others
How do you know which to use? Do you need to memorize each or know how to derive them?
Thanks in advance

[Sophia Diaz - Dis 1B]

When it comes to work, you don't need to memorize the derivative/integral equations. We were only shown them in order to understand where they came from and how to solve for what is missing.

When it comes to the rest of the work equations, most of them are shown on the equations worksheet when we have an exam.
However, It is definitely necessary to remember when to use which equation when conditions changes. For example, know which work equation to use when pressure is constant versus when the temperature is constant (Also keep in mind irreversible vs reversible).

[Luis_Yepez_1F]

I would focus on the ones showed on the constants page that is given each test. Also as mentioned, we don't need to know any of the ones that have derivatives or the integrals, these serve mainly as proofs.

[Isabelle Fontanilla 1I]

So far, the only type of work we talked about is work through expansion/compression. For this, you only really need to remember(and understand) the work equation at constant pressure (w=-PΔV) and the work equation for reversible and isothermic configurations (w=-nRTln(V2/V1)).

[404982241]

Just like, look at the givens.

[Jason Ye 2I]

Look at the given units and variables

[Mark 1D]

whichever best suits and demands and variables of the question

[Pritish Patil 1K]

There are charts on the internet that simplify which equation to use for a certain situation (ex: isobaric, isothermal, etc). Hope this helped!

[Jack DeLeon 1B]

most of the equations will be given to us on the equation sheet, and it is important to know which one to use in a given situation