Identify the expression for average rate for the following reaction: $N_{2(g)} + 3H_{2(g)} \rightarrow 2NH_{3(g)}$

  • A
    $-\frac{\Delta[N_2]}{\Delta t} = -\frac{1}{3} \frac{\Delta[H_2]}{\Delta t} = \frac{1}{2} \frac{\Delta[NH_3]}{\Delta t}$
  • B
    $-\frac{1}{3} \frac{\Delta[N_2]}{\Delta t} = \frac{\Delta[H_2]}{\Delta t} = \frac{1}{2} \frac{\Delta[NH_3]}{\Delta t}$
  • C
    $-\frac{\Delta[N_2]}{\Delta t} = -\frac{\Delta[H_2]}{\Delta t} = \frac{\Delta[NH_3]}{\Delta t}$
  • D
    $-\frac{1}{2} \frac{\Delta[N_2]}{\Delta t} = -\frac{\Delta[H_2]}{\Delta t} = \frac{1}{3} \frac{\Delta[NH_3]}{\Delta t}$

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