Question

WHY IS SIGN CONVENTIONS OF THERMODYNAMICS IN CHEMISTRY IS DIFFERENT FROM SIGN COVENTIONS OF PHYSICS'S THERMODYNAMICS

Answer 1

BONJOUR ✌

HERE IS YOUR ANSWER ⤵

There is no difference and the equation will yield the same answer. The difference is by deciding the point of reference for the work done.____________________________________________________________When we have W=+P/\V, you just have to decide where do you look from. Am I the system and work is done on me, or am I outside and doing work on the system?______________________________Anyhow, once you choose your point of reference you should stick to it and do all your calculations according to it. I guess, as in most of these cases it's historical. Another example is difference notation, chemists use A to symbolise the free Helmholtz energy while in physics it's T.



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Answer 2

Answer:

Fundamentally, thermodynamics in physics and chemistry is the same. The only difference is the notation of work in both, with work done by the system taken as positive in physics, and work done on the system taken as positive in chemistry. ... So, this is the distinction between the thermodynamics of physics and chemistry!