Gay-Lussac's Law (P1/T1 = P2/T2)Chemistry
Gay-Lussac's Law Gas Pressure & Temperature Calculator (P1/T1 = P2/T2)
Calculate final gas pressure (P2) or temperature (T2) in rigid closed vessels at constant volume (isochoric process) using absolute Kelvin temperatures.
Calculated Result
Final Gas Pressure (P2)
1.42bar
Calculator Inputs
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Final Gas Pressure (P2)
1.42bar
Pressure in PSI
20.86 bar
Pressure Increase (ΔP)
0.42 bar
Isochoric Pressure Surge: Constant-volume heating intensifies molecular collision frequency, proportionally elevating pressure in Kelvin.
Isochoric Pressure Elevation
Initial P1
1 atm(41%)
Final P2
1.42 atm(59%)
Standard thermodynamic gas law tool for isochoric closed-system ideal gas calculations.
Calculation Methodology
Gay-Lussac's Law: P1 / T1 = P2 / T2 at constant volume. Temperatures must strictly be in Kelvin (K = °C + 273.15). Final Pressure P2 = P1 * (T2 / T1).
Frequently Asked Questions
A sealed rigid lid maintains constant volume; as heating raises temperature, vapor pressure increases significantly, raising water's boiling point above 100°C to cook food faster.
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