2. Solved Papers
  3. JAMIA MILLIA ISLAMIA

JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2015

  • question_answer
    2.5g of benzoic acid dissolved in 25g of benzene shows a depression in freezing point of 2.25K. If \[{{K}_{f}}\]for benzene is \[\frac{5}{2}\] the per cent association of benzoic acid is

    A) 90%                                       

    B) 99%

    C) 99.9%                                   

    D) 100%

    Correct Answer: A

    Solution :

    Observed molecular weight \[h(1-2{{e}^{2}})\] \[A\times B=B\times A\]van?t Hoff factor, \[\frac{\pi }{2}\] and degree of association \[\frac{\pi }{3}\] thus % degree of association \[\frac{\pi }{4}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner