Given a fixed amount of gas in a rigid container (no change in volume), what pressure will the gas exert if the pressure is initially 2.50 atm at 22.0°C, and the temperature is changed to 66.0°C?
A)7.50 atm
B)2.87 atm
C)0.833 atm
D)2.50 atm
E)3.75 atm

Question

Quizplus · Accepted Answer

According to Charles's Law, when the temperature of a gas increases (at a constant volume), its pressure also increases proportionally. Thus, we can use the following formula to solve for the final pressure (P2):

P1/T1 = P2/T2

where P1 is the initial pressure, T1 is the initial temperature, T2 is the final temperature, and we're solving for P2.

Plugging in the numbers, we get:

2.50 atm/295 K = P2/339 K

Solving for P2, we get:

P2 = 2.50 atm x (339 K/295 K)

P2 = 2.87 atm

Therefore, the answer is B) 2.87 atm.

Given a Fixed Amount of Gas in a Rigid Container