Gay Lussac’s Law is expressed as:

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

Also written as:

$P\propto T$

These are the variables:

• P1- Initial Pressure
• T1- Initial Temperature
• P2- Final Pressure
• T2- Final Temperature

The formulas in Gay Lussac’s Law:

$$\begin{gathered} P_1=\frac{P_2 T_1}{T_2} \\ {T}_1=\frac{P_1 T_2}{P_2} \end{gathered}$$ $$\begin{gathered} P_2=\frac{P_1 T_2}{T_1} \\ {T}_2=\frac{P_2 T_1}{P_1} \end{gathered}$$