InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Two liquids X and Y form an ideal solution. At 300K, vapour pressure of the solution containing 1 mol of X and 3 mol of Y is 550 mm Hg. At the same temperature, if 1 mol of Y is further added to this solution, vapour pressure of the solution increases by 10 mm Hg. Vapour pressure (in mmHg) of X and Y in their pure states will be, respectivelyA. 200 and 300B. 300 and 400C. 400 and 600D. 500 and 600 |
|
Answer» Correct Answer - C `p_(A)^(@)+p_(B)^(@)X_(B)=P_("total")` `=p_(A)^(@)xx(1)/(4)+p_(B)^(@)xx(3)/(4)=550` `=p_(A)^(@)+3p_(B)^(@)=550xx4` ………(i) Similarly `=p_(A)^(@)xx(1)/(5)+p_(B)^(@)xx(4)/(5)=560` `p_(A)^(@)+4p_(B)^(@)=560xx5` ……….(ii) Eq. (ii) - Eq. (i) `p_(B)^(@)=560xx5-550xx4=600` So, `p_(A)^(@)=400` `m = 180` |
|