Increase in Pressure
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Increase in Pressure
For increases in pressure (decreases in volume), the reaction goes toward the side with less moles. When finding out which side has the least amount of moles, do you also include aqueous solutions or only gases?
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Re: Increase in Pressure
This only applies to reactions with gases, so I don't believe there would be any problems involving a change in pressure with aqueous solutions.
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Re: Increase in Pressure
Like the others have said, changes in pressure that affect volume only applies to gases since changes in pressure don't have an impact/affect liquids or solids, so aqueous species would also be unaffected since they're not gases, but rather a chemical species that has been dissolved in water. A question that shows this as an example is 5.61 in the textbook. Hope this helps!
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Re: Increase in Pressure
Pressure is a measurement to describe gases, therefore only consider moles of gases
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Re: Increase in Pressure
Pressure with a change in volume will always only be applicable to gases. In order to use Le Chatelier's principle that it will balance out pressure, the substances need to be gaseous.
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Re: Increase in Pressure
Pressure only applies to gases, especially in the context of volume changing. The volume of aqueous solutions can't change, but the volume of gases can.
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Re: Increase in Pressure
Pressure is associated with gasses, and something can only have a concentration if it is dissolved in a solvent.
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Re: Increase in Pressure
Increasing pressure (by decreasing volume) only applies to gases because for liquids and solids, changing the pressure does not change the volume. Therefore, you would only consider the moles of gases.
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Re: Increase in Pressure
Hi! I believe increasing/decreasing pressure in a reaction system only has an effect on gases.
Hope it helps!
Hope it helps!
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Re: Increase in Pressure
This only applies to gases. Liquid pressure has very little association with volume.
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Re: Increase in Pressure
It only applies to gasses so don't worry about in another context. Also, it follows the least moles. One of the crazier ideas is if the moles are the same is that there is no direct change rather it just decrease equally.
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Re: Increase in Pressure
In these problems, you don't consider anything in a non-gaseous state because it doesn't affect the gas pressure of the system.
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Re: Increase in Pressure
When finding out which side has the least amount of moles, you only include gases, but not aqueous solutions.
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Re: Increase in Pressure
Gases because they are the only ones that have partial pressures. Aqueous, liquids, and solids do not have partial pressures so increasing the system's pressure won't do anything to them or their concentrations.
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Re: Increase in Pressure
I believe this would only be for gases rather than aqueous substances. Changing the pressure would only affect the moles of gas.
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Re: Increase in Pressure
You don't include aqueous solutions because pressure changes only apply to/change gasses.
Re: Increase in Pressure
You would only need to consider the gases! He mentioned in class that we can't really give enough pressure to change the volume of solids and liquids in this course so we don't consider it!
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Re: Increase in Pressure
When looking at changes in pressures in relation to the chemical reaction, you would like at the moles of the gases only.
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Re: Increase in Pressure
You would only count gases, and there should not be any questions with this in it if it has other things that are not gases
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