Gay-Lussac's Law

Also known as pressure law · amontons law · pressure temperature law

\frac{P_1}{T_1} = \frac{P_2}{T_2}

P₁ =

T₁ =

P₂ =

T₂ =

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Gay-Lussac's law covers gas in a rigid container: with volume fixed, pressure tracks absolute temperature exactly. Tires warming from 280 K to 310 K on the highway gain about 11% in pressure — which is why manufacturers specify cold-tire readings. Temperatures must be absolute; the calculator converts Celsius and Fahrenheit to kelvin for you.

Gay-Lussac's Law

\frac{P_1}{T_1} = \frac{P_2}{T_2}

Where

$P_1$ = Initial pressure
$T_1$ = Initial absolute temperature
$P_2$ = Final pressure
$T_2$ = Final absolute temperature

Missing one of these? Work it out first, then come back

Initial pressure — Boyle's Law, Combined Gas Law
Initial absolute temperature — Charles's Law, Combined Gas Law
Final pressure — Boyle's Law, Combined Gas Law
Final absolute temperature — Charles's Law, Combined Gas Law

Part of this formula set

The gas laws

5 formulasBoyle, Charles, Gay-Lussac, the combined law and the ideal gas law — each holding one property fixed, and how they collapse into PV = nRT.