Calculate pressure and temperature changes in a gas at constant volume.
Initial & Final States
Calculation Results
Enter 3 known values to solve
About this calculator
Overview
Gay-Lussac's Law (Amontons's Law) states that the pressure of a given mass of gas is directly proportional to its absolute temperature when the volume is kept constant.
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Pro Tips
Always use absolute temperature (Kelvin) for gas law calculations.
Volume must remain constant for this law to apply correctly.
P₁/T₁ = P₂/T₂
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Fun Facts
"This law explains why pressure cookers work: increasing temperature increases pressure inside the constant-volume pot."
"It's also why car tire pressure increases on hot days."
"Joseph Louis Gay-Lussac was a French chemist and physicist known for his research on gas properties."
