Moderate

As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches____________________?

Correct answer: B. Unity

  • A. Zero
  • B. Unity
  • C. Infinity
  • D. An indeterminate value

Explanation

As pressure approaches zero, a real gas approaches ideal-gas behaviour, and its fugacity approaches its pressure. Therefore the fugacity coefficient f/P approaches unity.

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