Respuesta :
Answer:
The perfect gas law is reliable at the limit of pressure tending to zero. That is to say, at low pressure. The Van der Waals law instead can be used at higher pressures.
Explanation:
The perfect law equation is
[tex]P.V = n.R.T[/tex]
The perfect gas law considers that the gas molecules have no interaction between each other and each molecule has null volume. This condition happens at the limit of pressure tending to zero.
The Van der Waals equation is
[tex](P +\frac{n^{2}.a}{V^{2}})(V-n.b) = n.R.T[/tex]
On the other hand, the Van der Waals law has two extra terms, one to consider the interaction of the molecules (n2a/V2) and other to consider the volume of the molecules (V-nb). These terms make a better approximation to a real gas.
Using the two equations to calculate the pressure (P) for CO2 with
V = 100cm3 = 0.1L
T = 25ºC = 298K
n = 10g/(44g/mol) = 0.23mol
a = 3.658 atm.L2/mol2
b = 0.0429 L/mol
With the perfect law equation:
[tex]P = \frac{n.R.T}{V} = \frac{0.23molx0.082\frac{atm.L}{K.mol}x298K }{0.1L} = 56.2atm[/tex]
With the Van del Waals law:
[tex]P = \frac{n.R.T}{V-n.b} -\frac{n^{2}.a}{V^{2} }[/tex]
[tex]P = \frac{0.23molx0.082\frac{atm.L}{K.mol}x298K}{0.1L - 0.23molx0.0429\frac{L}{mol} }-\frac{(0.23mol)^{2}x3.658\frac{atm.L^{2}}{mol^{2}}}{(0.1L)^{2}} = 43 atm[/tex]
At this case the difference between the results of the two equations is due to the big mass of CO2 which produce a high pressure.
The study of chemicals and bonds is called chemistry. There are different types of elements and these are metals and nonmetals.
The correct answer is 43 atm
What is atmospheric pressure?
- Atmospheric pressure is the force exerted at any given point on the Earth’s surface by the weight of the air above that point.
- The air that surrounds the Earth creates atmospheric pressure and this pressure is determined by the collective weight of air molecules
The ideal gas equation is as follows:-
[tex]p=\frac{n*t*r}{v}[/tex]
All the gata is given in the question and solves the equation:-
[tex]P = \frac{0.23*0.82*298}{0.1*0.23*0.0429}[/tex]
The value of P is 43 atm.
For more information about the atm, refer to the link:-
https://brainly.in/question/9531558
