Isobaric
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Isobaric
I understand that isobaric means that pressure is constant and ΔP=0, but what equation does it play a role in?
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Re: Isobaric
For a constant pressure system, you would be able to use the equation W=-P*deltaV, as the P would be constant and thus can be multiplied by the change in volume to get the work done.
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Re: Isobaric
Also in relation to the change in internal energy, heat under constant pressure is dH, which could help with the manipulation of dU=q+w.
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Re: Isobaric
That also means that you must use the Cv value for ideal gases
MONOATOMIC: 3/2*R
LINEAR: 5/2*R
NONLINEAR: 7/2*R
MONOATOMIC: 3/2*R
LINEAR: 5/2*R
NONLINEAR: 7/2*R
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Re: Isobaric
Isobaric basically means there is no change in pressure, which means you can have work and heat changing your internal energy.
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Re: Isobaric
Isobaric means there's no change in pressure. As pressure is constant, use the formula w=-p*deltaV to find the work. Other words include Isochoric, which means there's no change in volume (AKA no work) and isothermic, which means no change in temperature (Delta U = 0).
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Re: Isobaric
If there is no change in pressure, as stated as ΔP=0, then there is value for the pressure to be plugged in the equation of w =-PΔV. If the value of pressure or the change in volume are not given, then you can use -Δn*R*T to find work. At a constant pressure,qp equal to ΔH. You can also find q with q=nCpΔT.
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Re: Isobaric
To further complement the above responses, know that W = -PdeltaV is used to calculate work done by expansion against constant P. So since isobaric means constant pressure, this equation would be used.
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