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NEET Sample Paper NEET Sample Test Paper-84

  • question_answer
    The rate constant of a zero order reaction is \[2.0\times {{10}^{-2}}\,\text{mol}\,\,{{L}^{-1}}{{s}^{-1}}\]. If the concentration of the reactant after 25 seconds is 0.5 M. What is the initial concentration?

    A) 0.5 M   

    B)        1.25 M

    C) 12.5 M 

    D)        1.0 M

    Correct Answer: D

    Solution :

    [d] For a zero order reaction Rate constant \[=k=\frac{a-x}{t}\] \[2\times {{10}^{-2}}=\frac{a-0.5}{25}\] \[a-0.5=0.5\] \[a=1.0\,\,M\]


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