The sum of mole fraction of the gases in a mixture of gases is _.
Correct answer: C. May be equal or less than 1
- A. Always greater than 1
- B. Always smaller than 1
- C. May be equal or less than 1
- D. Always 1
Explanation
c) May be equal or less than 1: This option is correct. The sum of mole fractions of gases in a mixture can be equal to 1 or less than 1. If the sum is equal to 1, it indicates that the mixture is ideal and the gases are not interacting with each other significantly. If the sum is less than 1, it means that the gases are interacting, and it is a non-ideal mixture.
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About Ideal Gas Equation
The ideal gas equation, PV = nRT, relates pressure, volume, amount and absolute temperature when gas particles are assumed to have negligible volume and no intermolecular forces. Applications include finding molar mass, density or an unknown gas variable, with careful use of Kelvin temperature and consistent units, and comparison with real-gas behaviour.
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