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What happens when a non reacting gaseous substance like inert gas is added to a gaseous system in equilibrium? Explain the influence at constant pressure.

What happens when a non reacting gaseous substance like inert gas is

added to a gaseous system in equilibrium? Explain the influence at

constant pressure.

Grade:12th pass

1 Answers

Akshay Meena
askIITians Faculty 34 Points
7 years ago

----- > The volume is increased by adding an inert gas to the mixture at constant pressure. In this case the total pressure will stay constant, but the partial pressures of the reactants and products will decrease.  

This is because the total pressure now includes the pressure resulting from the inert gas.  This has the effect of diluting the mixture and is identical to simply mechanically increasing the volume.

----- > Increasing the pressure by adding an inert gas at constant volume has no effect. This is because what matters for the equilibrium are the partial pressures of the reactants and products.

Adding an inert component to a system at constant volume will change the total pressure but not the partial pressures of the compounds of interest.

 

Thanks & Regards
Akshay Meena, 
askIITians Faculty
M.Tech, IIT Kharagpur

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