The rate constant is the same for $3$ reactions of order $I, II$,and $III$,respectively,with the unit of concentration being in moles per litre. If the concentration of the reactant is unity,the rates of reaction $R_1, R_2, R_3$ will be:

  • A
    $R_1 = R_2 = R_3$
  • B
    $R_1 < R_2 < R_3$
  • C
    $R_1 > R_2 > R_3$
  • D
    $R_1 = R_2 \neq R_3$

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