InterviewSolution
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InterviewSolution
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The vapour pressure of a pure liquid A is 70 torr at 300K. It forms an ideal solution with another liquid B. The mole fration of B in the solution is 0.2 and total pressure of solution is 84 torr at 300K. The vapour pressure of pure liquid B at `26^(@)C` isA. 14B. 56C. 140D. 70 |
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Answer» Correct Answer - C `P_(A) = X_(A) xx P_(A)^(@)=(1-0.2) xx70=56 ` torr, `P_(B)=P_("total")-P_(B)=84-56=28` torr `P_(B)=X_(A) xx P_(B)^(@)` or `p_(B)^(@)= P_(B)//X_(B)=28//0.2=140` torr |
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