Answer to Question #104879 in General Chemistry for Charles

Question

4.0 L of gas at 9.5 atm pressure is allowed to expand to 25.0 L. What is the pressure of the new gas?

Answer 1

Solution:

pV=nRT - The Clapeyron formulae

n=const - substsnce amoutn of a gas is constant

T=const - the temperature is not changed

=> p₁V₁=p₂V₂; => p₂=p₁V ₁/V₂

p₁=9.5atm, V₁=4.0L, V₂=25.0L

p₂=9.5atm*4.0L/25.0L=1.25atm

Answer:

The pressure of the new gas is 1.25atm