Q56 / 180 · NEET 2018 · Chemistry
The correction factor 'a' to the ideal gas equation corresponds to which of the following?
- AElectric field present between the gas molecules.
- BVolume of the gas molecules.
- CDensity of the gas molecules.
- Correct answerDForce of attraction between the gas molecules.
Solution
Vanderwal constant forces of attraction.
The constants a and b are called van der Waals constants. They have positive values and are characteristic of the individual gas. If a gas behaves ideally, both a and b are zero, and van der Waals equations approaches the ideal gas law PV=nRT. The constant a provides a correction for the intermolecular forces.
Hence, the correct answer is option: 'D'.