Decreasing pressure

Moderators: Chem_Mod, Chem_Admin

Amy Luu 2G
Posts: 105
Joined: Wed Sep 18, 2019 12:19 am

Decreasing pressure

Postby Amy Luu 2G » Sat Jan 18, 2020 9:54 pm

When you decrease the total pressure of the total equilibrium reaction, does the reaction shift towards the side with more or less moles? why?

Sahil Jog 1F
Posts: 126
Joined: Thu Jul 11, 2019 12:16 am

Re: Decreasing pressure

Postby Sahil Jog 1F » Sat Jan 18, 2020 9:59 pm

Decreasing the pressure would mean that it would increase the volume of the reactants/products. This would indicate that the concentration of the reactants/products would decrease. This would mean that the reaction would shift towards the side with the least amount of moles, since it would have a lower concentration than it should at equilibrium.

Kavya Immadisetty 2B
Posts: 106
Joined: Sat Aug 24, 2019 12:17 am
Been upvoted: 1 time

Re: Decreasing pressure

Postby Kavya Immadisetty 2B » Sat Jan 18, 2020 10:03 pm

If pressure is increased, volume decreases. If volume decreases the reaction proceeds to the side with less moles of gas.

If pressure is decreased, volume increases. If volume increases the reaction proceeds to the side with more moles of gas.

805329408
Posts: 49
Joined: Wed Nov 20, 2019 12:21 am

Re: Decreasing pressure

Postby 805329408 » Sat Jan 18, 2020 11:28 pm

Why does the reaction shift to the side with less moles of gas when pressure increases? And why does the reaction shift to the side with more moles of gas when pressure decreases?

405268063
Posts: 102
Joined: Thu Jul 25, 2019 12:17 am

Re: Decreasing pressure

Postby 405268063 » Sun Jan 19, 2020 12:24 am

I personally like to think of the system trying to alleviate stress within itself. So if pressure is increased on one side, it wants the reaction to go the other way to relieve it.


Return to “Equilibrium Constants & Calculating Concentrations”

Who is online

Users browsing this forum: No registered users and 2 guests