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NEET Sample Paper NEET Sample Test Paper-58

  • question_answer
    The rate law for reaction between substances A and B is given by \[Rate=k\,{{[A]}^{n}}\text{  }\!\![\!\!\text{ B}{{\text{ }\!\!]\!\!\text{ }}^{m}}\]            On doubling the concentrations of A and halving the concentration of B, ratio of new rate to tha earlier rate will be:

    A) \[m+n\]                        

    B) \[m-n\]

    C) \[{{2}^{(n-m)}}\]                    

    D) \[\frac{1}{{{2}^{(m-n)}}}\]

    Correct Answer: C

    Solution :

    [a] 0.15 mol/L NaCI solution used should be isotonic with bloodstream. For NaCI \[i=2,\,\pi =iCRT\] \[\therefore \,\,C=\frac{\pi }{iRT}\] \[=\frac{7.8\,bar}{2\times 0.083\,bar\,L{{K}^{-1}}\,mo{{l}^{-1}}\times 310K}\]


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