Activity co-efficient is a measure of the____________________?
Correct answer: A. Departure from ideal solution behaviour
- A. Departure from ideal solution behaviour
- B. Departure of gas phase from ideal gas law
- C. Vapour pressure of liquid
- D. None of these
Explanation
The activity coefficient compares a component's actual activity with its ideal-solution value, so it measures departure from ideal solution behaviour. Departure of a gas from ideality is instead described by the fugacity coefficient.
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