volume change with inert gas

[ursulavictorino1K]

Why doesn't the reaction shift when the pressure is changed by an inert gas?

[Niharika 1H]

The reaction doesn't shift because although the pressure does increase, the partial pressures of the existing gasses aren't affected by adding an inert gas.

[Gerald Bernal1I]

The inert gas does not change the volume and therefore does not change the concentrations of the gases therefore it will not affect the equilibrium.

[Sjeffrey_1C]

In class, he explained that if the pressure of a reaction vessel is increased by adding inert gas, then moles of reactant, product and volume are constant, so there's no change in [R] and [P].

[Connor Chappell 2B]

The answer to your question is found in the equation PV=nRT, which can be rewritten as P=(nRT)/V. n/V is the mathematical notation for concentration, therefore P = (concentration)(RT). Thus, the reason that concentration of a substance does not change in a beaker when the pressure is increased by adding an inert gas. This is because we simply increase the number of moles (n) in the equation without changing V. Thus, when we take the ratio of the number of moles of the targeted substance (n), the Concentration will be the same because the ration of n/V has not changed.

[JohannaPerezH2F]

the reaction does not shift (concentration does not change) with an inert gas because in order to do so we would need volume to change.

[EMurphy_2L]

the only reason we think of the reaction shifting with increased pressure is presumably because we were taught it wrong before. While increasing pressure by like putting force on gas does shift the reaction, it's really because the volume is changing (not the pressure which is changing but not affecting the reaction). So if we add an inert gas the volume doesn't change so the reaction doesn't shift.
we just have to change our thinking of what actually affects a reaction (not pressure!)

[Abigail_Hagen2G]

Okay, that makes more sense, thank you

[cassidysong 1K]

the inert gas doesn't change the physical characteristics of the products and reactants

[Angela Prince 1J]

the inert gas will not affect the concentration or partial pressures of the products or the reactants, they will remain constant so the reaction does not shift.