Question

Using van der Waals equation determine the pressure exerted by 3.00 mol of Ar gas with a volume of 50.0 L at 25.0 °C.​

Answer 1

1.47 atm

Step-by-step explanation:

From the question.

Applying

PV = nRT................. Equation 1

Where P = pressure, V = volume, T = temperature, n = number of moles, R = Molar gas constant

Makr P the subject of the equation

P = nRT/V................ Euqation 2

Given: V = 50.0 L, n = 3.00 mol, T = 25°C = (273+25) = 298K,

Constant: R = 0.082 atm.L.K⁻¹mol⁻¹

Substitute these values into equation 2

P = (3×298×0.082)/(50)

P = 73.308/50

P = 1.46616

P ≈ 1.47 atm