Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
For a binary solution of\[{{H}_{2}}O\]and\[C{{H}_{3}}C{{H}_{2}}OH,\] deviation from Raoult's law is observed. Which of the following is/are incorrect? (1) \[\Delta {{H}_{mixing}}<0\] (2) \[{{p}_{{{H}_{2}}O}}<p_{{{H}_{2}}O}^{o}{{\chi }_{{{H}_{2}}O}}\] (3) \[{{p}_{{{H}_{2}}O}}>p_{{{H}_{2}}O}^{o}{{\chi }_{{{H}_{2}}O}}\] (4) \[\Delta {{V}_{mixing}}>0\]A) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: B
Solution :
A binary solution of\[{{H}_{2}}O\]and\[C{{H}_{3}}C{{H}_{2}}OH\]shows positive deviation from Raoult's law. Thus, for this solution, \[\Delta {{H}_{mixing}}>0\] \[\Delta {{V}_{mixing}}>0\] \[{{P}_{{{H}_{2}}O}}>p_{{{H}_{2}}O}^{o}{{\chi }_{{{H}_{2}}O}}\]
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