Page 19 - Instant notes
P. 19
Perfect gases 5
representing the perfect gas equation.
The locations of the lines from (a) and
(b) are indicated on the surface.
The partial pressure of component A divided by the total pressure is given by:
p A/p total=(n AR T/V)/(n totalR T/V)=n A/n total
The quantity n A/n total is known as the mole fraction of component A, and is denoted
x A(Topic D1). The advantage of this quantity is that it is easily calculated, and allows
ready calculation of partial pressures through the relation:
p A=x n p total
