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Posted: Fri Jan 25, 2019 10:26 am
I understand that when pressure increases by adding inert gas, there is no effect on the reaction. But why is this? Is it because the inert gas affects the whole reaction ( both products and reactants) equally?

Posted: Fri Jan 25, 2019 1:05 pm
Because an inert gas does not react with the reactants or products, it is essentially not changing the concentration of the products and reactants. In addition, the volume is constant so the concentrations remain untouched. Therefore, this will not effect equilibrium.

Posted: Sat Jan 26, 2019 1:24 pm
A pressure change will only have an effect on a reaction if it is caused by a change in volume. If you increase pressure by reducing the volume, then the molecules within the reaction are compressed and because they want to be stable with the lowest energy, the reaction will favor whichever side has less moles because that means there will be less molecules interacting. If you add an inert gas to the reaction, you aren't actually changing the volume and the reaction is still contained within the same space. The inert gas will increase the pressure, but the reaction has no reason to change because there isn't a different space to compress or spread out into.

Posted: Sun Jan 27, 2019 5:28 am
Inert gas doesnt react with any of the reactants but it changes the pressure. However, the pressure is not a change of volume so it ends up not affecting the reaction.

Posted: Sun Jan 27, 2019 10:21 am
An inert gas does not react with the species in the reactions. Therefore, it does not affect any of the concentrations, and K remains the same

Posted: Sun Jan 27, 2019 4:38 pm
The concentrations of the reactants and the products both don't change when you add an inert gas because inert gases don't react with anything really.

Posted: Mon Feb 04, 2019 4:45 pm
Because the inert gases do not really interact with anything else, adding inert gases does not have an astounding effect on the concentrations.

Posted: Thu Feb 07, 2019 3:13 am
When a reaction vessel has an inert gas pumped into it at a constant volume to increase the total pressure, then the total pressure will increase but the partial pressures of the reactants and products are unchanged and therefore the K value will not be affected.