For the reaction $2 \ NO + Cl_2 \rightarrow 2 \ NOCl$,what is the relation between $\frac{d[NO]}{dt}$ and $\frac{d[NOCl]}{dt}$?

  • A
    $\frac{d[NO]}{dt} = 2 \frac{d[NOCl]}{dt}$
  • B
    $\frac{d[NO]}{dt} = -\frac{d[NOCl]}{dt}$
  • C
    $\frac{d[NO]}{dt} = \frac{d[NOCl]}{dt}$
  • D
    $\frac{d[NO]}{dt} = -\frac{1}{2} \frac{d[NOCl]}{dt}$

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