Answer:
P2 = 0.95atm
Explanation:
Using Gay Lussac's equation as follows
P1/T1 = P2/T2
Where;
P1 = initial pressure
T1 = initial temperature
P2 = final pressure
T2 = final temperature
According to the information provided in this question; P1 = 1.00atm, T1 = 120°C, P2 = ?, T2 = 100°C
We need to convert temperature in °C to K
T1 (K) = 120°C + 273K = 393K
T2 (K) = 100°C + 273K = 373K
Hence;
P1/T1 = P2/T2
1.00/393 = P2/373
373 × 1 = 393 × P2
373 = 393P2
P2 = 373/393
P2 = 0.949
P2 = 0.95atm
