According to the pressure law, the pressure (P) of a fixed mass of a gas is directly proportional to its absolute temperature (T) provided that the volume remains constant. Mathematically;
[tex]\begin{gathered} P\alpha T \\ P=kT \\ k=\frac{P}{T} \end{gathered}[/tex]k is the variation constant
If we have initial and final pressure and initial and final temperature, the formula can be written as:
[tex]k=\frac{P_1}{T_1}=\frac{P_2}{T_2}_{}_{}[/tex]3) The gas law that demonstrates the equation and definition above is known as the PRESSURE LAW.