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NEET Sample Paper NEET Sample Test Paper-64

  • question_answer
    In a catalytic conversion of \[{{N}_{2}}\,to\text{ }N{{H}_{3}}\] by Haber?s process, the rate of reaction was expressed as change in the concentration of ammonia per time is\[40\,\,\times \,\,{{10}^{-}}^{3}mol\text{ }litr{{e}^{-}}^{1}{{s}^{-}}^{1}\]. If there are no side reaction, the rate of the reaction as expressed in terms of hydrogen is \[\left( in\text{ }mol\text{ }litr{{e}^{-}}^{1}{{s}^{-}}^{1} \right)\]

    A) \[60\times {{10}^{-}}^{3}\]    

    B) \[20\times {{10}^{-}}^{3}\]

    C) 1.200               

    D) \[10.3\times {{10}^{-}}^{3}\]

    Correct Answer: A

    Solution :

    \[{{N}_{2}}(g)\,\,+\,\,3{{H}_{2}}(g)\,\,\to \,\,2N{{H}_{3}}(g)\] \[\frac{-d({{N}_{2}})}{dt}\,\,=\,\,\frac{1}{3}\,\frac{d({{H}_{2}})}{dt}\,\,=\,\,\,\frac{1}{2}\,\frac{d(N{{H}_{3}})}{dt}\] \[=\,\,\frac{3}{2}\times \,40\,\,\times \,\,{{10}^{-\,3}}\,\,=\,\,60\,\times \,{{10}^{-3}}\]


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