Pressure and volume
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Pressure and volume
Are pressure and volume inversely related when identifying the direction a reaction is going to go when changing either factor? For example, if I want to increase the pressure, the reaction would move to the side with fewer moles and vice versa?
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Re: Pressure and volume
Pressure and volume are inversely related, according to Boyle’s law.
Thus increasing pressure implies a decrease in volume.
Decreasing volume causes reaction to move to side with fewer moles of gas.
So increasing pressure causes reaction to move to side with fewer moles of gas.
Thus increasing pressure implies a decrease in volume.
Decreasing volume causes reaction to move to side with fewer moles of gas.
So increasing pressure causes reaction to move to side with fewer moles of gas.
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Re: Pressure and volume
PV=nRT where P= pressure, V=volume, n= moles, R= gas constant, T=temperature, shows that pressure and volume do indeed have an inverse relationship. Assuming moles, the gas constant, and the temperature do not change (let's call their collective product 1 for simplicity), you now get the equation PV=1 or P=1/V. This shows that they do indeed have an inverse relationship.
Re: Pressure and volume
Not always. For instance, when the pressure is increased by adding inert gas and the container is not changed, the volume stays the same.
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Re: Pressure and volume
If the pressure is increased by decreasing volume then that is correct but if pressure is increased by pumping gas in then that would be incorrect because moles and volume will have stayed constant and therefore the concentrations will have stayed constant and no change in the reaction will occur
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