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Question
Under which condition laws of Boyle, Charles, and Gay-Lussac are valid?
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Solution 1
The laws of Boyle, Charles, and Gay-Lussac are strictly valid for real gases, only if the pressure of the gas is not too high and the temperature is not close to the liquefaction temperature of the gas.
Solution 2
- Boyle’s Law `(P alpha 1/V "at constant T")`: Boyle’s Law states that pressure (P) and volume (V) are inversely proportional when temperature and the number of gas molecules remain constant. It is valid only if the temperature remains constant and the gas behaves ideally.
- Charles’s Law (V ∝ T at constant P): Charles’s Law states that volume (V) and absolute temperature (T) are directly proportional when pressure and the number of gas molecules remain constant. It is valid only if the pressure remains constant and the gas follows ideal gas behaviour.
- Gay-Lussac’s Law (P ∝ T at constant V): Gay-Lussac’s Law states that pressure (P) and absolute temperature (T) are directly proportional when volume and the number of gas molecules remain constant. It is valid only if the volume remains constant and the gas exhibits ideal behaviour.
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