A) there is a positive deviation from Raoult's law
B) boiling point has been lowered
C) force of attraction between A and B is smaller than that between A and A or between B and B
D) all the above statements are correct
Correct Answer: D
Solution :
[d] \[{{p}_{\text{ideal}}}=p_{A}^{o}{{x}_{A}}+p_{B}^{o}{{x}_{B}}\] |
\[=100\times \frac{1}{4}+80\times \frac{3}{4}=85\,mm\,Hg\] |
\[{{p}_{actual}}=90mm\,Hg\] |
Actual vapor pressure is greater than the vapor pressure of ideal solution. Hence, a positive deviation from Raoult's Jaw. |
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