The degradation rate constant of diazotpentaoxide (N2O5) at 25 ° C was determined as 1.38 x10-5 s-1 according to the 2N2O5 ⇒ 4NO O2 reaction in the gas phase. Accordingly, the reaction grade, the half-life of N2O5, and the partial pressure of N2O5 with an initial pressure of 500 mmHg, 100 min after the start, have been given correctly? A. Reaction degree: Half life of first order N2O5: 2.51 x104 s Partial pressure: 424 mmHg B. Reaction degree: Half life of zero degree N2O5: 5.0 x10-4 s Partial pressure: 200 mmHg   C. Reaction degree: Half life of second degree N2O5: 5.5 x104 s Partial pressure: 800 mmHg D. Reaction degree: Half life of first order N2O5: 25 x10-4 s Partial pressure: 200 mmHg

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