The relation between pressure exerted by an ideal gas (P_ideal) and observed pressure (P_real) is given by the equation:
P_ideal = P_real+

If pressure is taken in Nm^-2, number of moles in mol and volume in m³, Calculate the unit of ‘a’.

What will be the unit of ‘a’ when pressure is in atmosphere and volume in dm³?

Question

Philoid · Accepted Answer

We have:

P _ideal = P _real+

P_ideal– P_real=

Now, putting the value of units of pressure, volumes and n, we have

The unit of ‘a’ when the pressure is taken in Nm^-2, number of moles in “mol” and volume in m³ is

Now, when pressure is in atmosphere and volume in dm³ than, the value of ‘a’ is:

a =