Questions tagged [ideal-gas]
For questions about the ideal gas law or gases which can be well approximated as an ideal gas.
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Finding porosity using Ideal gas law
A 1 $cm^3$ sample or reservoir rock is put in a chamber of 10 $cm^3$, where the total pressure is 750 $mmHg$. This chamber is closed, and a valve is opened such that the air can expand to another ...
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Phase diagram for a mixture of substances
I have a rudimentary question about phase diagrams, my professional training is as a mechanical engineer so I don't deal with them often.
I have an experiment where I need a mixture of air and CO$_2$ ...
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Question about chemical potential of a multicomponent ideal gas
Consider a pure ideal gas, i.e. only having one component. The chemical potential and free energy of this gas are as follows:
$$\mu_1=\mu^\circ(T)+RT\ln\left(P\right)$$
$$G_1=n\mu_1$$
Where n is the ...
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Volume of gas mixture [closed]
I have inlet to a reactor formed by equimolar CH4 and NH3, I want to find the volume of this gas mixture.
First I wanted to calculate the sum of individual volumetric flow rates from V = m*rho. ...
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Is rate of effusion directly proportional to pressure [duplicate]
From Graham's law of effusion we know that rate of effusion is inversely proportional to square root of density of gas but if two gases are being effused at different pressures then is rate directly ...
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Volumetric flow rate ratio calculation
I'm using two tanks of nitrogen and oxygen and mixing them in different ratios to change the oxygen partial pressure in the system. System is opened to the atmosphere through the venting pipe which ...
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How to convert molar volume to volume?
This seems like a simple question that people must have asked already, but I can't find an answer online.
I'm not a chemist, but need to use a code that deals with thermodynamics. I am trying to use ...
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Deviation from ideal gas behavior
I know that gases deviate from ideal behavior at low temperature and high pressure
But what if we increase the pressure of a gas by increasing the temperature keeping the volume constant. Would the ...
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Is gas solubility independent of pressure?
My physical chemistry textbook poses this question:
Prove the statement that an alternative way to express Henry’s law of gas solubility is to say that the volume of gas that dissolves in a fixed ...
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How can enthalpy of an ideal gas be independent of pressure?
I know that when one applies a manipulation of the Ideal Gas Law to the Maxwell Relations the result that enthalpy is independent of pressure tumbles out of it, i.e., $(\mathrm dH/\mathrm dp)=0$.
I ...
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When a gas is expanded, why doesn't the number of moles of a gas increase despite it's volume increasing? [closed]
This question might be elementary, but it is genuine. I realise that some users might downvote the question for being so basic, but I urge them to be a little merciful, and help out a confused high ...
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Validity of ideal gas law for pure species or mixture
I'm currently dealing with an application involving gases. I have pure nitrogen as a pressurizer and eventually water vapour (only if condition for evaporation or boiling are met).
I wanted to ask to ...
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How do I determine temperature and pressure rise whenever mols of gases are added in a isolated room?
Let's consider a fully isolated room, no gas or heat flowing from it.
We consider gases ($\ce{O2,N2,CO2}$) to follow the ideal gas law, and no chemical reaction occurs between them.
Pressure $p$, ...
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In collision theory why we multiply collision frequency by N/2?
In kinetic theory of gases we know that the average number of collisions, $N_\mathrm{col}$, is given by
$$N_\mathrm{col} = \sqrt{2\pi\sigma^2 \overline{v}_\mathrm{rel}}\ N $$
where $N$ is the number ...
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RMS Speed of Gases as Standard Deviation
In kinetic molecular theory, the average velocity of gas particle is zero since the molecule move in different directions, and the overall effect is zero. Howeever, you can calculate different speeds.
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