Question

19. Consider the following statements:
The coefficient B in the virial equation of state
(i) is independent of temperature
(ii) is equal to zero at boyle temperature PVm = RT 1+
(iii) has the dimension of molar volume
Which of the above statements are correct.
(A) i and ii
(B) i and iii (C) ii and iii (D) i, ii and iii
B C
+
V V2
m​

Answer 1

Answer:

ii and iii

Explanation:

The statements ii and iii are true.

The coefficient B in the virile equation on state PV

m =RT(1+ V mm B + V mmm+...)

b.is equal to zero at boyle temperature. At this temperature, the real gas behaves like ideal gas and the viral equation becomes ideal gas equation PV

m

=RT

c. has the dimension of molar volume. This is because in the viral equation, it appears in the form of the ratio B/V

m