A gas occupies 1.84 L at a pressure of 3.67 atm. If the gas expands to 4.22 L what is the final pressure?

Question

a. 3.67 atm

b. 7.7 atm

c. 1.6 atm

d. 1.99 atm

e. 2.1 atm

Answer 1

At constant T, the ideal gas law simplifies to P₂V₂ = P₁V₁ or P₂ = P₁V₁ / V₂ = (3.67) (1.84) / 4.22 = 1.60 atm [c].