Question

The decomposition of $ N_2O_5$ occurs as, $2N_2O_5 \to 4N_2 + O_2$, and follows Ist order kinetics, hence:

• A. the reaction is unimolecular
• B. the reaction is bimolecular
• C. $ {{t}_{1/2}}\propto {{a}^{o}} $
• D. none of the above

Answer 1

Answer: (C)

For an nth order reaction
$ {{t}_{1/2}}\propto \frac{1}{{{a}^{n-1}}} $
$ \therefore $ For 1st order reaction,
$ {{t}_{1/2}}\propto \frac{1}{{{a}^{1-1}}}\propto {{a}^{o}}. $