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AP EAMCET202120 Aug 2021Morning ShiftChemistryChemical KineticsActual

Which statement among the following is incorrect?

Options

  1. AUnit of rate of disappearance is M   s - 1
  2. BUnit of rate of reaction is M   s - 1
  3. CUnit of rate constant k depends upon order of reaction
  4. DUnit of rate constant k for a first order reaction is M   s - 1

Correct answer

D. Unit of rate constant k for a first order reaction is M   s - 1

Step-by-step solution

Rate of disappearance of reaction of reactants is equal to the d R dt . Concentration has the unit M . Time has the unit of second. Hence, unit of rate of disappearance is M   s - 1 . Rate of reaction is equal to the concentration per unit time. So, the unit of rate of reaction is M   s - 1 . The unit of rate constant k depends upon order of reaction. Each order of reaction has the different unit of rate constant. The unit of rate constant k for a first order reaction is s - 1 . Hence, the incorrect state

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