Calculate the pressure that ccl4 will exert at 40 of 1.00 mol occupies 28.0 L, assuming that
(a) CCl4 obeys the ideal-gas equation
(b) CCl4 obeys the Van der Waals equation.
(a) PV = nRT
P = nRT / V
(b) (P + n^2a/V^2)(V - nb) = nRT
CCl4 =
a = 20.4 L^2-atm/mol^2
b = 0.1383 L/mol
@Drwls you must be fun at parties.
Its 40 C. Therefore, the equations are right then. Okay thanks
couldnt agree more to your 8 years late response @Person :D
Chemistry sux
For real, "Haha". It blows, like your momma
To calculate the pressure that CCl4 will exert, we need to use the ideal gas equation and the Van der Waals equation.
(a) According to the ideal gas equation, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.
In this case, we have n = 1.00 mol, V = 28.0 L, and we need to find P.
Substituting the given values into the equation:
P = (1.00 mol)(R)(40 K) / 28.0 L
To calculate the pressure, we also need to know the value of the ideal gas constant R, which is 0.0821 L⋅atm/(K⋅mol).
P = (1.00 mol)(0.0821 L⋅atm/(K⋅mol))(40 K) / 28.0 L
By simplifying the equation, we find:
P = 0.1181 atm
Therefore, CCl4 will exert a pressure of 0.1181 atm if it obeys the ideal gas equation.
(b) The Van der Waals equation for real gases accounts for the intermolecular forces and the volume that gas molecules occupy. It is given as:
(P + (n^2a / V^2))(V - nb) = nRT
In this case, we have n = 1.00 mol, V = 28.0 L, and we need to find P. We also have values for the Van der Waals constants for CCl4:
a = 20.4 L^2-atm/mol^2
b = 0.1383 L/mol
Substituting the given values into the equation:
(P + (1.00 mol)^2(20.4 L^2-atm/mol^2) / (28.0 L)^2)(28.0 L - (1.00 mol)(0.1383 L/mol)) = (1.00 mol)(R)(40 K)
Substituting the value of the ideal gas constant R (0.0821 L⋅atm/(K⋅mol)):
(P + (1.00 mol)^2(20.4 L^2-atm/mol^2) / (28.0 L)^2)(28.0 L - (1.00 mol)(0.1383 L/mol))
= (1.00 mol)(0.0821 L⋅atm/(K⋅mol))(40 K)
By simplifying the equation, we find:
P ≈ 0.1199 atm
Therefore, CCl4 will exert a pressure of approximately 0.1199 atm if it obeys the Van der Waals equation.
You have not said if the temperature is 40 C or 40 K. In either case, they have given you the equations and the numbers to plug in, to solve for P
Why not finish the problem yourself? You are the one who is supposed to be getting an education.