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Briana Yik 1H
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am


Postby Briana Yik 1H » Fri Jan 18, 2019 12:52 am

Why does increasing pressure by adding an inert gas not affect the concentration? Thank you

Netpheel Wang 4L
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

Re: pressure

Postby Netpheel Wang 4L » Fri Jan 18, 2019 1:23 am

Adding inert gas does not change the volume and therefore does not change the concentration.

Compressing would physically change the volume

Keep in mind the formula for concentration=n/v

Compressing would increase concentration

Adding moles of other inert gas does not affect other concentrations
Last edited by Netpheel Wang 4L on Fri Jan 18, 2019 1:28 am, edited 1 time in total.

Janice Park 1E
Posts: 36
Joined: Fri Sep 28, 2018 12:22 am

Re: pressure

Postby Janice Park 1E » Fri Jan 18, 2019 1:24 am

Hey! To answer your question, increasing pressure by adding an inert gas doesn't affect concentration because the volume of the system does not change (probably due to there not being a large enough difference in change in volume by adding the gas), and the moles of both reactants and products are not affected either, since inert gases will most likely not be involved in a reaction. That being said, because the moles of reactants and products and the volume all remain constant, there is no change in the reactant and product concentration and so there is no effect on the reaction.

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