A sample of a gas has an initial pressure of 0.987 atm and a volume of 12.8 L. What is the final pressure if the volume is increased to 25.6 L?
A) 2.03 atm
B) 1.97 atm
C) 0.494 atm
D) 0.003 atm
E) 323.4 atm

Question

Quizplus · Accepted Answer

According to Boyle's law, at a constant temperature, the product of pressure and volume is a constant. Therefore,

P1V1 = P2V2

(0.987 atm)(12.8 L) = P2(25.6 L)

Solving for P2, we get:

P2 = (0.987 atm)(12.8 L) / (25.6 L) = 0.494 atm

Therefore, the final pressure is 0.494 atm, which is answer choice C.

A Sample of a Gas Has an Initial Pressure of 0.987