All Questions
7 questions
1
vote
1
answer
92
views
Vibrational degree of freedom for monoatomic gases
I read that, when the temperature of a gas becomes high enough, a third type of degree of freedom becomes accessible, viz. the vibrational degree of freedom.
Also (at high temperatures) there is a ...
0
votes
0
answers
221
views
How many degrees of freedom does a diatomic and triatomic molecule have at high temperatures?
I understand that a diatomic molecule has 3 translational and 2 rotational degrees of freedom. But since there is only 1 vibrational mode associated with a diatomic molecule and 1 vibrational mode is ...
- 23
0
votes
2
answers
204
views
Is the equation for degrees of freedom $f=3N-k$ valid for all cases?
Consider the example of a linear triatomic molecule. Now at low temperatures, where we can exclude vibration, quite clearly degrees of freedom, $f=5$, with 3 translational and 2 rotational degrees of ...
- 23
2
votes
2
answers
737
views
Independent variables in thermodynamics
When we are dealing with a gaseous thermodynamic system, in books it's written that state of the system can be described by only two independent variables from the three $(p,V,T ) $. But it's not ...
- 71
0
votes
1
answer
300
views
Does the ideal gas law apply to gases which consist of more than one atom?
In the derivation of the ideal gas law, one sets for the average kinetical energy $f = 3$ degrees of freedom. This refers to the transition in x,y,z axes. This is true for gases, which consist of only ...
- 361
1
vote
3
answers
4k
views
How many degrees of freedom does the air have?
Very simple question that I am overthinking... But how many degrees of freedom does the air have? Assuming let's say the air is confined in a rigid box.
- 97
1
vote
2
answers
996
views
Rotation About Axis of Diatomic Molecule [duplicate]
While counting the degrees of freedom of a diatomic molecule, We neglect the rotation about the axis of the molecule stating the reason that it's energy is negligible. I agree with this reasoning, and ...
- 1,108