JEE Advanced 2018Paper 1
- Exam
- JEE Advanced
- Year
- 2018
- Paper
- Paper 1
- Subject
- Chemistry
- Chapter
- Solutions
JEE Advanced 2018 · Paper 1 · Chemistry · Solutions
Liquids A and B form ideal solution over the entire range of...
Liquids A and B form ideal solution over the entire range of composition. At temperature , equimolar binary solution of liquids A and B has vapour pressure . At the same temperature, a new solution of A and B having mole fractions , respectively, has vapour pressure of . The value of , in the new solution is ____.
(Given that the vapour pressure of pure liquid A is at temperature )
(Given that the vapour pressure of pure liquid A is at temperature )
Correct answer
0
Step-by-step solution
45 = {P}_{A}^{o} \times \dfrac{1}{2} + {P}_{B}^{o} \times \dfrac{1}{2}{P}_{A}^{o} + {P}_{B}^{o} = 90\left(i\right){P}_{A}^{o} = 20Torr{P}_{B}^{o} = 70Torr⇒ 22 .5 torr = 20{x}_{A} + 70 \left(1 - {x}_{A}\right)
.
{x}_{A} = \left(\dfrac{70 - 22 .5}{50}\right)
So, .
.
{x}_{A} = \left(\dfrac{70 - 22 .5}{50}\right)
So, .