Answer:
0.957 atm.
Step-by-step explanation:
- The general law of ideal gases is:
PV = nRT.
where, P is the pressure of the gas in atm.
V is the volume of the container in L.
n is the no. of moles of the gas.
R is the genral gas constant.
T is the temperature of the gas in K.
∵ n = mass/molar mass.
∴ PV = (mass/molar mass)RT
∴ P = (mass/V)(RT/molar mass)
∵ d = mass/V
∴ P = dRT/molar mass
∵ d = 2.51 g/L, R = 0.082 L.atm/mol.K, T = 25°C + 273 = 298 K, molar mass of SO₂ = 64.06 g/mol.
∴ P = dRT/molar mass = (2.51 g/L)(0.082 L.atm/mol.K)(298.0 K)/(64.06 g/mol) = 0.957 atm.