Given T=572 ºF, pressure= 145 psi (g) using the steam tables and ideal gas law
Molar Mass= 18 g/mol for water
Find: Is the water vapour acting ideally?
Ideal Gas Law: PV=nRT
P is the pressure =145 psi (g)
V is the molar volume
R= Ideal gas constant 8.314 J(K^-1)(mol^-1)
T is temperature in kelvin, so temperature in farenheit= 572 ºF =573.15 ºK
How can I calculate the molar volume using the steam tables? and how can I know if the water vapour is acting ideally?
3. The Attempt at a Solution
Ideal gas law: PV= nRT
so: V= nRT/P= (18 mol)(8.314 JK^-1mol^-1)(573.15 ºK)= 85773.04=8.5x10(^4) metres cube
where: P= 145 psi (g)= 999739.80705 Pascals
1 Psi = 6 894.75729 Pascals