Answer:
2.0 L.
Explanation:
- We can use the general law of ideal gas: PV = nRT.
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
- If n and T are constant, and have two different values of V and P:
P₁V₁ = P₂V₂
P₁ = 1.0 atm, V₁ = 2.5 L.
P₂ = 1,25 atm, V₂ = ??? L.
∴ V₂ = P₁V₁/P₂ = (1.0 atm)(2.5 L)/(1.25 atm) = 2.0 L.
