"The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture". This is__________________?
Correct answer: B. Called Lewis-Randall rule
- A. The statement as per Gibbs-Helmholtz
- B. Called Lewis-Randall rule
- C. Henry's law
- D. None of these
Explanation
The Lewis-Randall rule states that a component's fugacity in an ideal mixture equals its mole fraction multiplied by its pure-component fugacity at the mixture pressure. Henry's law instead describes a dilute solute whose fugacity is proportional to concentration through a Henry constant.
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