Question

Pls help ......
For triatomic gas degree of freedom formula is N=3A-R . Here how the independent relation is three for triatomic gas like co2 ??

Answer 1

What are the degrees of freedom of monoatomic, diatomic, and triatomic gases?

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The total number of independent modes(ways) in which a system can possess energy is called Degree of freedom.

Monoatomic GAS The Molecules pf monoatomic gas can move in any direction in space so it can have three independent motions and hence 3 degree of freedom (all translational).

Diatomic GAS A molecule of diatomic gas has five degrees of freedom (3 tanslational and 2 rotational).

Triatomic GAS (non-linear) A molecule of non linear gas can rotate about any of three co-ordinate axes.Hence it has six degrees of freedom (3 translational and 3 rotational).