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NEET Sample Paper NEET Sample Test Paper-70

  • question_answer
    Rate law for a gaseous reaction \[\operatorname{A}\,\,+\,\,B\,\xrightarrow{{}}\,\,C +\,D\] is given by \[Rate=K{{\left[ A \right]}^{2}}\,{{\left[ B \right]}^{0}}\] The volume of reaction vessel containing these gases is suddenly reduced to one-fourth of the initial volume. The rate of reaction relative to original rate would be

    A) \[\frac{1}{16}\]                      

    B)   \[\frac{16}{1}\]

    C) \[\frac{1}{8}\]                                    

    D) \[\frac{8}{1}\]

    Correct Answer: B

    Solution :

    On reducing the volume to \[^{1/4}th\] increases the concentration of each reacting species to four times. As the rate is proportional to square of concentration of A and is independent of concentration of B, the rate increases sixteen times.


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