Q. Most gases deviate from ideal behavior at:

अधिकांश गैसें आदर्श व्यवहार से विचलित होती हैं:

A
High temperature and low pressure
उच्च तापमान और निम्न दबाव
B
Low temperature and high pressure
कम तापमान और उच्च दबाव
C
High temperature and high pressure
उच्च तापमान और उच्च दबाव
D
Low temperature and low pressure
कम तापमान और कम दबाव

Explanation

Real gases deviate most from ideal behavior under conditions where:

Low temperature:

  • Molecules move slowly
  • Intermolecular forces become significant
  • Attractive forces cause Z < 1

High pressure:

  • Molecules are forced close together
  • Molecular volume becomes significant
  • Repulsive forces cause Z > 1
  • Both attractive and repulsive effects are amplified

Ideal conditions:

  • High temperature: Molecules move fast, overcome attractions
  • Low pressure: Large intermolecular distances, negligible interactions

Real gas effects:

  • van der Waals forces (attraction)
  • Finite molecular size (repulsion)
  • Both effects are minimized at high T, low P

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