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NEET Chemistry NEET PYQ-Chemical Kinetics

  • question_answer
    The rate constant of the reaction A ® B is \[0.6\times {{10}^{-3}}\] mole per second. If the concentration of A is 5 M then concentration of B after 20 min is                             [NEET 2015 (Re)]

    A) 1.08 M

    B) 3.60 M

    C) 0.36 M

    D) 0.72 M

    Correct Answer: D

    Solution :

    [d] Key concept For a zero order reaction unit of rate constant is mole per second. Hence, we can easily calculate concentration of B after 20 mm by the following formula,
    \[x=Kt\]
    \[x=Kt=0.6\times {{10}^{-3}}\times 20\times 60=0.72M\]


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