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Gas Law

Posted: Tue Jan 16, 2018 2:15 pm
by Connie2I
How do you know when to use/apply the Ideal Gas Law in a question?

Re: Gas Law

Posted: Tue Jan 16, 2018 5:03 pm
by Ryan Sydney Beyer 2B
I think a good way of seeing whether or not to use the ideal gas law is based on the information that the problem gives you. If the problem gives you temp info, volume info and info about moles. Then we can work this equation and solve for pressure. Also, there may be problems where we have to know the relationship between work and pressure / volume. dw = -PdV for reversible and w = -P(deltaV) for irreversible. Then we can sub the parts of the ideal gas law in for P since P = nRT/V.

Re: Gas Law

Posted: Tue Jan 16, 2018 7:50 pm
by melissa carey 1f
Additionally, it seems, that in the textbook we can usually assume the gas is behaving ideally, unless stated otherwise? Someone correct me if I'm wrong.