For a reaction,$N_2O_{5(g)} \rightarrow 2NO_{2(g)} + \frac{1}{2}O_{2(g)}$ in a constant volume container,no products were present initially. The final pressure of the system when $50\%$ of the reaction is completed is:

  • A
    $7/2$ times of initial pressure
  • B
    $5$ times of initial pressure
  • C
    $5/2$ times of initial pressure
  • D
    $7/4$ times of initial pressure

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