For a binary ideal liquid solution, the curve that represents the variation in total vapor pressure versus composition of the solution is:
a.
b.
c.
d.
The correct option is:
1. a and b
2. b and c
3. c and d
4. a and d
Hint: Use Raoult's law
Explanation:
According to Raoult's law, the partial vapour pressure of a component in an ideal mixture is equal to the vapour pressure of the pure component multiplied by its mole fraction.
Depending on the vapor pressures of the pure components 1 and 2, total vapor pressure over the solution decreases or increases with the increase of the mole fraction of component 1.
