Question

n moles of an ideal gas undergoes a thermodynamics process in
which pressure of gas varies linearly with the with the volume of gas
as shown in figure. The maximum temperature of the gas during the
xPV
process is 4nR Then the value of xis
2Pol
Pot--
2V​

Answer 1

Answer:

Explanation:

First, you can consider that the entire term: RT∙e

−a

⁄RTVm

(Vm−b)

must have units of pressure.

However, it is easier to note that (Vm − b) is a sum and thus "b" has the same units as Vm:

m3

/mol. Last, you should know that the argument of an exponential cannot have units; thus

a

RTVm

is unitless. This means that "a" must be J∙m3

/mol2

.