## Le Chatelier's Principle

Clara Cho 2K
Posts: 103
Joined: Wed Sep 18, 2019 12:18 am

### Le Chatelier's Principle

Does change in pressure affect the concentration of the reactants and products?

KeyaV1C
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Joined: Sat Aug 17, 2019 12:17 am
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### Re: Le Chatelier's Principle

Yes it does. Increasing the pressure of a reaction by decreasing volume favors the side of the reaction with less mols of gas. If you increase pressure by adding an inert gas, it doesn’t change the concentration of reactants or products.

aishwarya_atmakuri
Posts: 101
Joined: Sat Jul 20, 2019 12:15 am

### Re: Le Chatelier's Principle

If the change in pressure changed the volume, it affects the concentration. If the change in pressure was caused by the addition of an intert gas, the volume hasn't changed so the concentrations have not changed.

Posts: 50
Joined: Mon Jun 17, 2019 7:24 am

### Re: Le Chatelier's Principle

As an addition to the earlier replies: Although changing the pressure changes the concentration of the products and reactants, their ratio will return to the equilibrium constant, Kp. Only a change in temperature changes Kp, not the pressure or concentration of products and reactants.

rohun2H
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Joined: Wed Sep 18, 2019 12:19 am

### Re: Le Chatelier's Principle

Yes, but K remains constant.

Miriam Villarreal 1J
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Joined: Sat Aug 17, 2019 12:16 am

### Re: Le Chatelier's Principle

When there is an increase in pressure, the equilibrium will shift towards the side of the reaction with fewer moles of gas. When there is a decrease in pressure, the equilibrium will shift towards the side of the reaction with more moles of gas.

Bilal Pandit 1J
Posts: 98
Joined: Wed Sep 11, 2019 12:16 am

### Re: Le Chatelier's Principle

When the pressure changes, then the Q will be different than the Kp, so you can figure out which way the experiment will shift according to that.

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