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  • For an ideal gas which statement is not true.Option: 1 It obeys Boyle's LawOption: 2 It

For an ideal gas which statement is not true.

Option: 1

It obeys Boyle's Law


Option: 2

It follows PV = RT


Option: 3

Molecule of gas are identical spherical rigid and perfectly elastic point mass.


Option: 4

It follows Vander Waal's equation.


Answers (1)

best_answer

Rest all the statements are correct and till now you have learned all those statements. But ideal gas does not obey the Van der Waals equation. Let us understand this in brief.

Van der Waals equation: \left(P+\frac{a}{v^{2}}\right)(v-b)=R T

To account for the volume that a real gas molecule takes up, the van der Waals equation replaces V in the ideal gas law with (v-b), where v is the molar volume of the gas and b is the volume that is occupied by one mole of the molecules.

Here a and b depends on the gas and unlike an ideal gas, the real gas molecules do interact among themselves (attraction or repulsion)

\therefore  It does not follow Vander Waal's equation.

Posted by

vinayak

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