# Gay-Lussac's Law

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Gay-Lussac's Law, one of the Gas Laws, states the proportional, that when temperature increases, pressure increases, when pressure decreases, temperature decreases.

## Gay-Lussac's Law formula

 $$\large{ \frac { p_1} {T_1} = \frac { p_2} {T_2} }$$

### Where:

 Units English Metric $$\large{ p_1 }$$ = pressure (use Kelvin) $$\large{\frac{lbf}{in^2}}$$ $$\large{Pa}$$ $$\large{ p_2 }$$ = pressure (use Kelvin) $$\large{\frac{lbf}{in^2}}$$ $$\large{Pa}$$ $$\large{ T_1 }$$ = absolute temperature (required for Gay-Lussac's Law) $$\large{ F }$$ $$\large{ K }$$ $$\large{ T_2 }$$ = absolute temperature (required for Gay-Lussac's Law) $$\large{ F }$$ $$\large{ K }$$