If the temperature is increased from 200K to 800K, then what would be the change in pressure at constant volume?
Correct answer: A. Increases by factor 4
- A. Increases by factor 4
- B. Decreases by factor 4
- C. Increases by factor 2
- D. Decreases by factor 2
Explanation
According to Gay-Lussac's Law (P ∝ T at constant volume), pressure is directly proportional to the absolute temperature. Since the temperature increases by a factor of 800K / 200K = 4, the pressure will also increase by a factor of 4.
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About Ideal Gas Equation
The ideal gas equation, PV = nRT, relates pressure, volume, amount and absolute temperature when gas particles are assumed to have negligible volume and no intermolecular forces. Applications include finding molar mass, density or an unknown gas variable, with careful use of Kelvin temperature and consistent units, and comparison with real-gas behaviour.
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