PdeltaV with Solids and Liquids

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MadisonFuentes1G
Posts: 52
Joined: Fri Sep 29, 2017 7:04 am

PdeltaV with Solids and Liquids

Postby MadisonFuentes1G » Mon Feb 04, 2019 11:19 pm

IN the equation, deltaU=deltaH-PdeltaV, why is PdeltaV insignificant with solids and liquids when there is a constant Pressure?

Jennifer Su 2L
Posts: 47
Joined: Wed Nov 21, 2018 12:20 am

Re: PdeltaV with Solids and Liquids

Postby Jennifer Su 2L » Mon Feb 04, 2019 11:20 pm

Because you can't change the volume of solids and liquids, so delta V will be 0. Therefore, PdeltaV will equal 0, which makes it insignificant.

Ibrahim Malik 1H
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am
Been upvoted: 1 time

Re: PdeltaV with Solids and Liquids

Postby Ibrahim Malik 1H » Tue Feb 05, 2019 12:17 am

Solids and liquids have a set volume, so there can be no change in volume. Hence, the change in V or delta V is 0.

Saman Andalib 1H
Posts: 73
Joined: Fri Sep 28, 2018 12:16 am

Re: PdeltaV with Solids and Liquids

Postby Saman Andalib 1H » Tue Feb 05, 2019 12:45 am

By nature of the formula and the relationship PV=nRT, if the pressure of the system is maintained at a constant value, there can be no fluctuation in the value of V, therefore making delta V 0 and the overal p*deltav term insignificant.


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