Pressure and equilibrium

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Abigail Menchaca_1H
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Joined: Sat Sep 07, 2019 12:19 am

Pressure and equilibrium

Postby Abigail Menchaca_1H » Sun Jan 26, 2020 5:26 pm

What effect does pressure have on the equilibrium of the reaction?

Jesalynne 2F
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Joined: Wed Sep 18, 2019 12:18 am

Re: Pressure and equilibrium

Postby Jesalynne 2F » Sun Jan 26, 2020 5:50 pm

If the pressure is increased the reaction will go towards the side with fewer gas particles. If you decrease the pressure the reaction will go to the side with more gas particles.

zfinn
Posts: 106
Joined: Fri Aug 30, 2019 12:16 am

Re: Pressure and equilibrium

Postby zfinn » Sun Jan 26, 2020 6:08 pm

Jesalynne 2F wrote:If the pressure is increased the reaction will go towards the side with fewer gas particles. If you decrease the pressure the reaction will go to the side with more gas particles.


this is a good quick way to do it, but Dr.Lavelle also emphasized that the reason behind this shift is how pressure changes the concentration, not simply its shift towards less gas particles.

Micah3J
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Joined: Tue Oct 08, 2019 12:16 am

Re: Pressure and equilibrium

Postby Micah3J » Sun Jan 26, 2020 6:11 pm

Pressure doesn't affect the equilibrium constant though right? It will only shift it one way or the other?

Kate Osborne 1H
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Joined: Fri Aug 30, 2019 12:16 am

Re: Pressure and equilibrium

Postby Kate Osborne 1H » Sun Jan 26, 2020 6:12 pm

You are right, pressure does not affect the equilibrium constant.

zfinn
Posts: 106
Joined: Fri Aug 30, 2019 12:16 am

Re: Pressure and equilibrium

Postby zfinn » Sun Jan 26, 2020 6:13 pm

Micah3J wrote:Pressure doesn't affect the equilibrium constant though right? It will only shift it one way or the other?


yep! heat is the only measure that affects the equilibrium constant

Micah3J
Posts: 100
Joined: Tue Oct 08, 2019 12:16 am

Re: Pressure and equilibrium

Postby Micah3J » Sun Jan 26, 2020 6:15 pm

zfinn wrote:
Micah3J wrote:Pressure doesn't affect the equilibrium constant though right? It will only shift it one way or the other?


yep! heat is the only measure that affects the equilibrium constant


Wait, you mean heat as well as concentration of either the products or the reactants right?

Kate Osborne 1H
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Joined: Fri Aug 30, 2019 12:16 am

Re: Pressure and equilibrium

Postby Kate Osborne 1H » Sun Jan 26, 2020 6:19 pm

concentration of either the products or reactants do not change the equilibrium constant, they simply shift the reaction

Angela Wu-2H
Posts: 50
Joined: Fri Aug 30, 2019 12:16 am

Re: Pressure and equilibrium

Postby Angela Wu-2H » Sun Jan 26, 2020 6:36 pm

Pressure does not affect the equilibrium constant. Only temperature changes the equilibrium constant.

Manav Govil 1B
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Joined: Sat Sep 07, 2019 12:19 am

Re: Pressure and equilibrium

Postby Manav Govil 1B » Sun Jan 26, 2020 6:41 pm

Also, solids and liquids are NOT affected by pressure.


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