The energy of activation for the following reaction is $10\mathrm{KJ}{\mathrm{mol}}^{-1}$ and ' k ' is $2.40\times {10}^{-5}{\mathrm{s}}^{-1}$ respectively at 300 K. The temperature at which t_1/2 is equal to 2 hrs will be $2{\mathrm{N}}_2{\mathrm{O}}_5⟶4{\mathrm{NO}}_2+{\mathrm{O}}_2$ in ${\mathrm{CCl}}_4[\log 4=0.6021]$