JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
        The half-life of \[\text{1}.\text{65}\times \text{1}{{0}^{-\text{36}}}\text{ mole}/\text{litre}\] is (disintegration constant,\[2A(g)3C(g)+D(s)\]) :

    A)  \[{{K}_{p}}(RT)\]

    B)  \[{{K}_{p}}/RT\]

    C)  \[={{K}_{p}}\]

    D)  \[{{\left( \text{C}{{\text{H}}_{\text{3}}} \right)}_{\text{2}}}\text{NH}>{{\left( \text{C}{{\text{H}}_{\text{3}}} \right)}_{\text{3}}}\text{N}>\text{C}{{\text{H}}_{\text{3}}}\text{N}{{\text{H}}_{\text{2}}}\]

    Correct Answer: D

    Solution :

                    Chloroform and acetone form a non-ideal solution, in which A ... B type interaction are more than A...A and B...B type interactions due to H-bonding. Hence, the solution shows negative deviation from Raoulf slaw. i.e., \[\Delta {{V}_{mix}}=-ve\] \[\Delta {{H}_{mix}}=-ve\] \[\therefore \] total volume of solution = less than \[\left( \text{3}0\text{ }+\text{ 5}0 \right)\text{ ml}\] Or                                                           \[<\text{8}0\text{ml}\]


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