In a system the volume and mass are kept constant. The initial temperature of the system is 120∘C and the pressure is 61.2 atm. If the temperature changes to −14∘C what is the pressure?
3. Calculate the new pressure: P2=P1T2T1=61.2 atm⋅259.15 K393.15 K
Step 1 :1. Apply Gay-Lussac's Law: P1T1=P2T2
Step 2 :2. Convert temperatures to Kelvin: T1=393.15 K, T2=259.15 K
Step 3 :3. Calculate the new pressure: P2=P1T2T1=61.2 atm⋅259.15 K393.15 K