isobaric

[samanthaywu]

What is the meaning of isobaric and what would we use this for?

[Karl Yost 1L]

Isobaric describes a process where the pressure remains constant. In terms of calculating the work that a system does, for instance, knowing that pressure is constant is useful because we can take pressure out of the integral and calculate that w=-P*deltaV. Also, when pressure is constant, q = delta H. This is useful in relation to biological systems where pressure changes are negligible.

[Hasmik Dis 2F]

Isobaric is basically a process in which pressure remains constant. How may this happen? Usually when we allow volume to expand/contract in a way to balance pressure changes. This can be used for calculating w, as said in the previous answer.

[Nico Medina]

I was wondering this as well. Thanks!

[Samir 3I]

An isobaric process is one in which the pressure of the system remains constant. Think about the example in lecture where the system with the piston is allowed to expand freely. This is important because allowing the pressure to remain constant means the force exerted (work) is constant allowing us to use the equation w=P(deltaV) to calculate the work. In summary, isobaric processes allow us to more easily calculate the work done by a system through expansion.

[Hannah Lechtzin 1K]

It means that a process is occurring at constant pressure. It is helpful because it tells us that we constants like heat capacity for constant pressure conditions (C_p). It also helps us decide which equations will be most useful to work with under those conditions.

[Brennan McGurrr 3C]

Isobaric means that the pressure does not change. Certain thermodynamic equations require the pressure to be constant. This can help distinguish between the different equations.

[Sam Wentzel 1F 14B]

Isobaric means no energy flow. Usually use it for calculating delta G.

[Sondia Luong 1C]

Isobaric means that pressure remains constant. I usually remember this because the "bar" in isobaric reminds me of the unit bar, which is used for pressure. In isobaric reactions, some useful things to remember are: w = -P∆V, Cp = 5/2R, q = ∆H, and ∆S = nCpln(T2/T1)

[ColmConnolly3D]

Isobaric is just another word for constant pressure. This means that you are likely dealing with an irreversible expansion, so w = -P∆V, and that heat (q) will equal enthalpy (∆H).

Hope this helps!
Colm

[FrancescaHawkins2H]

Isobaric refers to constant pressure, just as isothermic refers to constant temperature. This can be helpful when looking at which equation to use to solve a problem.

[Sid Panda 3A]

also want to add that a lot of biological systems perform rxns at constant pressure, which is why isobaric is relevant to our class.

[sophie esherick 3H]

As others stated before me, isobaric is just another way to say a system under constant pressure. It helps a lot to know because you can use Cp (specific heat capacity at constant pressure), w = -P∆V (external pressure is constant then work is probably done irreversibly), q = ∆H (enthalpy is q under standards of constant pressure), and the ∆S would be equal to nCpln(T2/T1).

[Nane Onanyan 1G]

Also remember our terms isothermal and isochoric! Isothermal means a constant temp, and isochoric means a constant volume.

[David Y]

Isobaric means constant pressure. So, in this case, there can still be work.

[Jeremy Wei 2C]

Isobaric refers to a system under constant pressure.

[Edgar Velazquez 2K]

Isobaric means that the pressure in the given problem is constant. Just like others pointed out, knowing that you're dealing with constant pressure (change in pressure is equal to 0) is helpful when looking for an equation that fits the problem. The other iso- words also give you information on what else could be constant in other chemistry exercises.

[Hannah Lechtzin 1K]

Isobaric simply means that the pressure of the system is constant. This lets us know to use constants for constant pressure and that work can be done on the system unless the volume is also remaining constant. I hope this helps!

[Emma_Barrall_3J]

Isobaric means constant pressure. This is important to know when determining which work equation to use.

[Colin Squire 3B]

An isobaric system indicates that pressure is going to be held constant. I like to think of this in terms of the pressure unit, bar, which is in the word. "Iso" meaning kept that same and "baric" relating to "bar" or the pressure of the system.

[Bai Rong Lin 2K]

isobaric basically means constant pressure for the system.