Boyle’s law, expressed as pV = constant, applies to gases under ___________________?
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Answer: B. only small range of pressures
Explanation
Boyle law, expressed as pressure multiplied by volume equals a constant, applies accurately only over small ranges of pressures. At very high pressures, real gas molecules deviate significantly from ideal behavior due to intermolecular forces. Therefore, the simple inverse proportional relationship holds true primarily at low or moderate pressure conditions. Robert Boyle discovered that gas volume varies inversely with absolute pressure at constant temperature. Real gases deviate from ideal gas laws because gas molecules occupy physical space and attract each other. Compressibility factors are used in advanced thermodynamics to correct Boyle law deviations at high pressures.
Applying Boyle law across all ranges of pressures introduces massive calculation errors for real gases. High ranges of pressures require van der Waals or real gas equations rather than basic Boyle law constants. Steady pressure changes describe operating conditions rather than the pressure magnitude limitation of the law.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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