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Question

The rate constant of the reaction AB is 0.6×103 mole per second. If the concentration of B after 20 min is:


  1. 0.72 M

  2. 1.08 M

  3. 3.60 M

  4. 0.36 M


Solution

The correct option is A

0.72 M


For a zero-order reaction unit of rate constant is mole per second. Hence, we can easily calculate the concentration of B after 20 min by the following formula,


X =Kt


X=Kt=0.6×103×20×60=0.72M

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