8. A solution contains a mixture of two volatile substances A and B.
The mole fraction of substance A is 0. 35. At 32°C the vapor pressure
of pure A is 87 mmHg, and the vapor pressure of pure B is 122
mmHg. What is the total vapor pressure of the solution at this
temperature?
a) 110 mmHg
b) 209 mmHg
c) 99. 3 mmHg
d) 73. 2 mmHg
