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 m 3 , Calculate the unit of ‘a’. What will be the unit of ‘a’ when pressure is in atmosphere and volume in dm 3 ?

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 =