- #1
TehDarkArchon
- 18
- 0
Calculate "a" values given equation of state for gases
For my equation of state:
Vm = (RT/P) - (a/T)
what kind of sign for the constant a (positive or
negative) do you think the following gases will have and why:
a. H2 b. He c. CH4 d. CO2
Hint: There is almost no math involved.
Vm = (RT/P) - (a/T) (obviously, lol)
I'm thinking critical values also might play a role, but since my professor stated that nearly no math is involved, I'm thinking that the answers are mostly derived from the given equation.
Honestly I have no idea where to start with this. I know in the standard Van der Waal's equation that the a values represent the error intermolecular attractions, and that the values for hydrogen and helium are very small because they basically have no attraction. I'm guessing negative values would represent intermolecular repulsion...any help is appreciated
Homework Statement
For my equation of state:
Vm = (RT/P) - (a/T)
what kind of sign for the constant a (positive or
negative) do you think the following gases will have and why:
a. H2 b. He c. CH4 d. CO2
Hint: There is almost no math involved.
Homework Equations
Vm = (RT/P) - (a/T) (obviously, lol)
I'm thinking critical values also might play a role, but since my professor stated that nearly no math is involved, I'm thinking that the answers are mostly derived from the given equation.
The Attempt at a Solution
Honestly I have no idea where to start with this. I know in the standard Van der Waal's equation that the a values represent the error intermolecular attractions, and that the values for hydrogen and helium are very small because they basically have no attraction. I'm guessing negative values would represent intermolecular repulsion...any help is appreciated