In: Physics
If a contained ideal gas decreases the volume by a factor of two and then triples the temperature, what happens to the pressure?
let P1 is the initial pressure
V1 is the initial volume
T1 is the initial temeperature
final volume, V2 = V1/2
final temperature, T2 = 3*T1
P2 = ?
use, idela gas equation, P*V = n*R*T
P*V/T = n*R
P*V/T = constant
so, P2*V2/T2 = P1*V1/T1
P2 = P1*(V1/V2)*(T2/T1)
= P1*(V1/(V1/2))*(3*T1/T1)
= P1*2*3
= 6*P1
so, pressure becomes 6 times