What pressure will a given sample of gas be at 27 ° C if at 100 ° C this gas exerts a pressure oF₄.0 atm, all measurements at constant volume?

Question

Quizplus · Accepted Answer

According to Gay-Lussac's Law, the pressure of a given sample of gas is directly proportional to its temperature (in Kelvin) at constant volume. Using this law, we can set up a proportion:
P1/T1 = P2/T2
where P1 is the initial pressure, T1 is the initial temperature (in Kelvin), P2 is the final pressure (what we want to find), and T2 is the final temperature (in Kelvin). 
Converting the temperatures to Kelvin, we have:
P1/373 = 1.00/300
Solving for P2:
P2 = (373/300) x 1.00 = 1.24 atm
Therefore, the pressure of the gas at 27°C is approximately 1.24 atm, which is closest to option B (3.2 atm).

What Pressure Will a Given Sample of Gas Be at 27