A sample of argon at 300.°C and 50.0 atm pressure is cooled in the same container to a temperature of What is the new pressure?
A)105 atm
B)45.5 atm
C)54.9 atm
D)23.8 atm
E)42.7 atm

Question

A sample of argon at 300.°C and 50.0 atm pressure is cooled in the same container to a temperature of  What is the new pressure?
A)105 atm 
B)45.5 atm 
C)54.9 atm 
D)23.8 atm 
E)42.7 atm

Quizplus · Accepted Answer

Using the combined gas law,

(P1/T1) = (P2/T2)

where P1 = 50.0 atm, T1 = 300°C + 273 = 573 K
and T2 = 117°C + 273 = 390 K

Solving for P2 gives:

P2 = (P1 x T2) / T1
   = (50.0 atm x 390 K) / 573 K
   ≈ 34.0 atm

Therefore, the new pressure is approximately 34 atm, which is closest to option D) 23.8 atm.

A Sample of Argon at 300